For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
1. The sound can be played normally, but the noise of "squeaky" will be heard from time to time.
The customer reported that there was no other noise when the computer was using the headphones, but the noise of the “squeaky†was occasionally issued when the speaker was used. Sometimes the time was longer, sometimes the time was shorter, and then it was normal. At first, it was suspected that the audio signal plug was not in good contact, but it was re-plugged. The replacement of the line still did not solve the problem. However, after the customer took the speaker to the company, he tried it for two consecutive days, but he never found the problem. The difference between before and after comparison, only the socket is different. At this time, I also remembered that the power socket on my desk, because of the poor quality, the contact is not strong, for a while strong, weak for a while, always cause the desk lamp to light for a while, dark for a while. It seems that the problem reflected by the customer is true. The reason is that the quality of the power socket is poor, and the quality of the phosphor bronze used inside is not good and the elasticity is poor. After a long time of use, the contact is not good. After a while, it will be disconnected. After a while, the power of the speaker will be turned on for a while, and will be broken. Because there is a large-capacity filter capacitor inside the power supply, the power supply voltage of the power amplifier circuit will be high, one will be low, and the sound intensity will change significantly. At the same time, because there will be interference signal of current on and off at the moment of switching. Breaking into the amplifier circuit can also cause other noise.
Solution: Replace the new high quality power outlet. Some profiteers may use the reasons that the customer does not understand, so as to demonstrate to the customer that the speaker has been repaired and collect money.
2. The sound can be played normally, but if you adjust the bass (BASS), the speaker will have a "beep" noise, which can't be tolerated.
Sometimes some speakers will have a "squeaky" noise when used, especially when the subwoofer knob is turned. Because it is caused by rotating the BASS knob, it can be sure that the BASS potentiometer is damaged. Most speakers' volume adjustments and subwoofer adjustments use a potentiometer to change the strength of the signal, in addition to the new digital tuning potentiometer. The potentiometer changes the value of the resistance by changing the position of the movable contact on the carbon block. As the use time increases, dust or impurities will fall into the potentiometer, and the contacts of the potentiometer may oxidize and rust, causing the contact to be unreal. At this time, the volume will be adjusted. The noise appeared. It is very simple to deal with this kind of problem. It is enough to replace a new potentiometer and it will cost no more than 2 yuan. However, the easiest way to do this is to open the case, open the four crimp tabs behind the potentiometer, the active contact of the lowest potentiometer, clean the carbon block with anhydrous alcohol, and then drop a drop of oil on the carbon block. The noise problem can be solved by installing the potentiometer in the original position. However, the reason for this example is that the mass of the potentiometer is unstable. In use, the reeds of the left and right channels are originally separated, but now they are dislocated, causing the time and break when used. "啪" noise. We just need to gently straighten it with a sharp-nipped scorpion, and then press it back in place. If there is similar noise when adjusting the volume, you can also repair it according to this method.
3. The sound plays normally, but one speaker sounds loud and one speaker sounds small. If you press the volume potentiometer to one side by hand, the volume of the two channels will be the same.
This fault is similar to the second one and is also a problem with the volume potentiometer. Because the left and right channels of the volume potentiometer are independent. Because the reeds have been used for too long, the inner reeds are too weak to be in close contact with the carbon barrier. Finally, the common ground of the potentiometer is directly connected, and the fault is eliminated.
4. Turn on the power switch of the speaker, and the speaker does not have a sound of â€œç °â€ when it is turned on normally. Turn on the MP3 player, adjust the volume, and the speaker does not have any sound.
This kind of fault is more common, and there is no sound in the speaker after booting. How do we judge that the speaker is really broken? First, before powering up the speaker, turn the volume pot to the maximum position. When turning on the power switch, pay attention to whether the speaker has a “beep†sound. If there is, it means that there is no problem with the speaker, the power supply is good, no sound may be the sound card driver error or sound failure, or it may be muted or the volume is too small, and the signal cable plug is not plugged. Or the signal line is broken. Also, if we touch the plug of the signal cable to the metal part of the chassis, the speaker will emit a "beep" hum, especially noticeable.
However, this example is because the speaker is used for too long, and the internal temperature is too high, causing the temperature inside the power transformer inside the speaker to fuse. Don't worry, we don't have to replace the power transformer. Just take the transformer carefully and look at the primary coil of the power transformer from the outside (that is, the end that is connected to 220V). On the side of the convex point, carefully peel off the plastic film on the surface with a sharp tweezer, and you will find a small white square with the words "250V2A" written. This is the temperature fuse. Because the use time is too long, the temperature of the transformer is too high. In order to avoid fire, the fuse resistor operates and cuts off the current supply. We only need to short-circuit the two ends of this fuse directly, but we need to pay attention to heat dissipation in the future use, do not use it for too long.
Many computer peripherals that use power transformers, such as external power supplies used by CANON and HP inkjet printers, power adapters used by external modems, external power supplies for some speakers, 220V/9V or 12V transformers in the cabinet, inside the coil Temperature protection resistors are added. In particular, the power transformers of CANON and HP printers are difficult to match, and the cost of finding a person to repair is also very high, but in actual maintenance, the transformer is taken apart, and the fuse is short-circuited according to the above method.
5. There is sound, but only high notes, but no bass.
This kind of fault is generally caused by the loud volume of the speaker, long-term use, burning the subwoofer that we usually say, or the thread is broken. Just spend a dozen dollars to replace a new one.
6. There is sound, but the sound is not clear, and the specific content cannot be heard.
In addition to damage to the tweeter, this type of failure may be a broken signal line or an integrated block of high-pitched amplification. Note: If you are using a soft sound card, sometimes you will inadvertently change the settings, and make the speaker's pronunciation, you can only hear the female voice, the male voice can not hear clearly.
7. As soon as the power is turned on, the “嗡嗡†sounds loudly. No matter how the volume is adjusted, the noise cannot be eliminated.
This situation is generally caused by long-term use, plus the speaker is closed, the heat can not be dissipated, the internal temperature is too high, and the integrated block is overheated and damaged. In fact, the genuine power amplifier integrated circuit has a temperature protection function. When overheated, the power amplifier integrated circuit will automatically stop the output, and when the temperature drops, it can automatically resume operation. However, in order to reduce the production cost, some speaker manufacturers use not the large-scale manufacturer's famous integrated circuit, but the use of some small-factor imitation integrated circuits, the quality is inferior. The solution is to buy a replacement of the same type of integrated circuit, the cost is only 5 dollars.
8. When the computer is turned on, the sound of the computer is normal, but after using it for a while, the "å—¡å—¡" sounds loudly and the ears can't stand it.
This fault is the same as the above example, but the power amplifier IC has not been completely damaged, and the fault occurs when it is overheated. We can open the case and increase the area of ​​the chip of the power amplifier IC. We can also replace the good quality film.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
1. The sound can be played normally, but the noise of "squeaky" will be heard from time to time.
The customer reported that there was no other noise when the computer was using the headphones, but the noise of the “squeaky†was occasionally issued when the speaker was used. Sometimes the time was longer, sometimes the time was shorter, and then it was normal. At first, it was suspected that the audio signal plug was not in good contact, but it was re-plugged. The replacement of the line still did not solve the problem. However, after the customer took the speaker to the company, he tried it for two consecutive days, but he never found the problem. The difference between before and after comparison, only the socket is different. At this time, I also remembered that the power socket on my desk, because of the poor quality, the contact is not strong, for a while strong, weak for a while, always cause the desk lamp to light for a while, dark for a while. It seems that the problem reflected by the customer is true. The reason is that the quality of the power socket is poor, and the quality of the phosphor bronze used inside is not good and the elasticity is poor. After a long time of use, the contact is not good. After a while, it will be disconnected. After a while, the power of the speaker will be turned on for a while, and will be broken. Because there is a large-capacity filter capacitor inside the power supply, the power supply voltage of the power amplifier circuit will be high, one will be low, and the sound intensity will change significantly. At the same time, because there will be interference signal of current on and off at the moment of switching. Breaking into the amplifier circuit can also cause other noise.
Solution: Replace the new high quality power outlet. Some profiteers may use the reasons that the customer does not understand, so as to demonstrate to the customer that the speaker has been repaired and collect money.
2. The sound can be played normally, but if you adjust the bass (BASS), the speaker will have a "beep" noise, which can't be tolerated.
Sometimes some speakers will have a "squeaky" noise when used, especially when the subwoofer knob is turned. Because it is caused by rotating the BASS knob, it can be sure that the BASS potentiometer is damaged. Most speakers' volume adjustments and subwoofer adjustments use a potentiometer to change the strength of the signal, in addition to the new digital tuning potentiometer. The potentiometer changes the value of the resistance by changing the position of the movable contact on the carbon block. As the use time increases, dust or impurities will fall into the potentiometer, and the contacts of the potentiometer may oxidize and rust, causing the contact to be unreal. At this time, the volume will be adjusted. The noise appeared. It is very simple to deal with this kind of problem. It is enough to replace a new potentiometer and it will cost no more than 2 yuan. However, the easiest way to do this is to open the case, open the four crimp tabs behind the potentiometer, the active contact of the lowest potentiometer, clean the carbon block with anhydrous alcohol, and then drop a drop of oil on the carbon block. The noise problem can be solved by installing the potentiometer in the original position. However, the reason for this example is that the mass of the potentiometer is unstable. In use, the reeds of the left and right channels are originally separated, but now they are dislocated, causing the time and break when used. "啪" noise. We just need to gently straighten it with a sharp-nipped scorpion, and then press it back in place. If there is similar noise when adjusting the volume, you can also repair it according to this method.
3. The sound plays normally, but one speaker sounds loud and one speaker sounds small. If you press the volume potentiometer to one side by hand, the volume of the two channels will be the same.
This fault is similar to the second one and is also a problem with the volume potentiometer. Because the left and right channels of the volume potentiometer are independent. Because the reeds have been used for too long, the inner reeds are too weak to be in close contact with the carbon barrier. Finally, the common ground of the potentiometer is directly connected, and the fault is eliminated.
4. Turn on the power switch of the speaker, and the speaker does not have a sound of â€œç °â€ when it is turned on normally. Turn on the MP3 player, adjust the volume, and the speaker does not have any sound.
This kind of fault is more common, and there is no sound in the speaker after booting. How do we judge that the speaker is really broken? First, before powering up the speaker, turn the volume pot to the maximum position. When turning on the power switch, pay attention to whether the speaker has a “beep†sound. If there is, it means that there is no problem with the speaker, the power supply is good, no sound may be the sound card driver error or sound failure, or it may be muted or the volume is too small, and the signal cable plug is not plugged. Or the signal line is broken. Also, if we touch the plug of the signal cable to the metal part of the chassis, the speaker will emit a "beep" hum, especially noticeable.
However, this example is because the speaker is used for too long, and the internal temperature is too high, causing the temperature inside the power transformer inside the speaker to fuse. Don't worry, we don't have to replace the power transformer. Just take the transformer carefully and look at the primary coil of the power transformer from the outside (that is, the end that is connected to 220V). On the side of the convex point, carefully peel off the plastic film on the surface with a sharp tweezer, and you will find a small white square with the words "250V2A" written. This is the temperature fuse. Because the use time is too long, the temperature of the transformer is too high. In order to avoid fire, the fuse resistor operates and cuts off the current supply. We only need to short-circuit the two ends of this fuse directly, but we need to pay attention to heat dissipation in the future use, do not use it for too long.
Many computer peripherals that use power transformers, such as external power supplies used by CANON and HP inkjet printers, power adapters used by external modems, external power supplies for some speakers, 220V/9V or 12V transformers in the cabinet, inside the coil Temperature protection resistors are added. In particular, the power transformers of CANON and HP printers are difficult to match, and the cost of finding a person to repair is also very high, but in actual maintenance, the transformer is taken apart, and the fuse is short-circuited according to the above method.
5. There is sound, but only high notes, but no bass.
This kind of fault is generally caused by the loud volume of the speaker, long-term use, burning the subwoofer that we usually say, or the thread is broken. Just spend a dozen dollars to replace a new one.
6. There is sound, but the sound is not clear, and the specific content cannot be heard.
In addition to damage to the tweeter, this type of failure may be a broken signal line or an integrated block of high-pitched amplification. Note: If you are using a soft sound card, sometimes you will inadvertently change the settings, and make the speaker's pronunciation, you can only hear the female voice, the male voice can not hear clearly.
7. As soon as the power is turned on, the “嗡嗡†sounds loudly. No matter how the volume is adjusted, the noise cannot be eliminated.
This situation is generally caused by long-term use, plus the speaker is closed, the heat can not be dissipated, the internal temperature is too high, and the integrated block is overheated and damaged. In fact, the genuine power amplifier integrated circuit has a temperature protection function. When overheated, the power amplifier integrated circuit will automatically stop the output, and when the temperature drops, it can automatically resume operation. However, in order to reduce the production cost, some speaker manufacturers use not the large-scale manufacturer's famous integrated circuit, but the use of some small-factor imitation integrated circuits, the quality is inferior. The solution is to buy a replacement of the same type of integrated circuit, the cost is only 5 dollars.
8. When the computer is turned on, the sound of the computer is normal, but after using it for a while, the "å—¡å—¡" sounds loudly and the ears can't stand it.
This fault is the same as the above example, but the power amplifier IC has not been completely damaged, and the fault occurs when it is overheated. We can open the case and increase the area of ​​the chip of the power amplifier IC. We can also replace the good quality film.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
1. The sound can be played normally, but the noise of "squeaky" will be heard from time to time.
The customer reported that there was no other noise when the computer was using the headphones, but the noise of the “squeaky†was occasionally issued when the speaker was used. Sometimes the time was longer, sometimes the time was shorter, and then it was normal. At first, it was suspected that the audio signal plug was not in good contact, but it was re-plugged. The replacement of the line still did not solve the problem. However, after the customer took the speaker to the company, he tried it for two consecutive days, but he never found the problem. The difference between before and after comparison, only the socket is different. At this time, I also remembered that the power socket on my desk, because of the poor quality, the contact is not strong, for a while strong, weak for a while, always cause the desk lamp to light for a while, dark for a while. It seems that the problem reflected by the customer is true. The reason is that the quality of the power socket is poor, and the quality of the phosphor bronze used inside is not good and the elasticity is poor. After a long time of use, the contact is not good. After a while, it will be disconnected. After a while, the power of the speaker will be turned on for a while, and will be broken. Because there is a large-capacity filter capacitor inside the power supply, the power supply voltage of the power amplifier circuit will be high, one will be low, and the sound intensity will change significantly. At the same time, because there will be interference signal of current on and off at the moment of switching. Breaking into the amplifier circuit can also cause other noise.
Solution: Replace the new high quality power outlet. Some profiteers may use the reasons that the customer does not understand, so as to demonstrate to the customer that the speaker has been repaired and collect money.
2. The sound can be played normally, but if you adjust the bass (BASS), the speaker will have a "beep" noise, which can't be tolerated.
Sometimes some speakers will have a "squeaky" noise when used, especially when the subwoofer knob is turned. Because it is caused by rotating the BASS knob, it can be sure that the BASS potentiometer is damaged. Most speakers' volume adjustments and subwoofer adjustments use a potentiometer to change the strength of the signal, in addition to the new digital tuning potentiometer. The potentiometer changes the value of the resistance by changing the position of the movable contact on the carbon block. As the use time increases, dust or impurities will fall into the potentiometer, and the contacts of the potentiometer may oxidize and rust, causing the contact to be unreal. At this time, the volume will be adjusted. The noise appeared. It is very simple to deal with this kind of problem. It is enough to replace a new potentiometer and it will cost no more than 2 yuan. However, the easiest way to do this is to open the case, open the four crimp tabs behind the potentiometer, the active contact of the lowest potentiometer, clean the carbon block with anhydrous alcohol, and then drop a drop of oil on the carbon block. The noise problem can be solved by installing the potentiometer in the original position. However, the reason for this example is that the mass of the potentiometer is unstable. In use, the reeds of the left and right channels are originally separated, but now they are dislocated, causing the time and break when used. "啪" noise. We just need to gently straighten it with a sharp-nipped scorpion, and then press it back in place. If there is similar noise when adjusting the volume, you can also repair it according to this method.
3. The sound plays normally, but one speaker sounds loud and one speaker sounds small. If you press the volume potentiometer to one side by hand, the volume of the two channels will be the same.
This fault is similar to the second one and is also a problem with the volume potentiometer. Because the left and right channels of the volume potentiometer are independent. Because the reeds have been used for too long, the inner reeds are too weak to be in close contact with the carbon barrier. Finally, the common ground of the potentiometer is directly connected, and the fault is eliminated.
4. Turn on the power switch of the speaker, and the speaker does not have a sound of â€œç °â€ when it is turned on normally. Turn on the MP3 player, adjust the volume, and the speaker does not have any sound.
This kind of fault is more common, and there is no sound in the speaker after booting. How do we judge that the speaker is really broken? First, before powering up the speaker, turn the volume pot to the maximum position. When turning on the power switch, pay attention to whether the speaker has a “beep†sound. If there is, it means that there is no problem with the speaker, the power supply is good, no sound may be the sound card driver error or sound failure, or it may be muted or the volume is too small, and the signal cable plug is not plugged. Or the signal line is broken. Also, if we touch the plug of the signal cable to the metal part of the chassis, the speaker will emit a "beep" hum, especially noticeable.
However, this example is because the speaker is used for too long, and the internal temperature is too high, causing the temperature inside the power transformer inside the speaker to fuse. Don't worry, we don't have to replace the power transformer. Just take the transformer carefully and look at the primary coil of the power transformer from the outside (that is, the end that is connected to 220V). On the side of the convex point, carefully peel off the plastic film on the surface with a sharp tweezer, and you will find a small white square with the words "250V2A" written. This is the temperature fuse. Because the use time is too long, the temperature of the transformer is too high. In order to avoid fire, the fuse resistor operates and cuts off the current supply. We only need to short-circuit the two ends of this fuse directly, but we need to pay attention to heat dissipation in the future use, do not use it for too long.
Many computer peripherals that use power transformers, such as external power supplies used by CANON and HP inkjet printers, power adapters used by external modems, external power supplies for some speakers, 220V/9V or 12V transformers in the cabinet, inside the coil Temperature protection resistors are added. In particular, the power transformers of CANON and HP printers are difficult to match, and the cost of finding a person to repair is also very high, but in actual maintenance, the transformer is taken apart, and the fuse is short-circuited according to the above method.
5. There is sound, but only high notes, but no bass.
This kind of fault is generally caused by the loud volume of the speaker, long-term use, burning the subwoofer that we usually say, or the thread is broken. Just spend a dozen dollars to replace a new one.
6. There is sound, but the sound is not clear, and the specific content cannot be heard.
In addition to damage to the tweeter, this type of failure may be a broken signal line or an integrated block of high-pitched amplification. Note: If you are using a soft sound card, sometimes you will inadvertently change the settings, and make the speaker's pronunciation, you can only hear the female voice, the male voice can not hear clearly.
7. As soon as the power is turned on, the “嗡嗡†sounds loudly. No matter how the volume is adjusted, the noise cannot be eliminated.
This situation is generally caused by long-term use, plus the speaker is closed, the heat can not be dissipated, the internal temperature is too high, and the integrated block is overheated and damaged. In fact, the genuine power amplifier integrated circuit has a temperature protection function. When overheated, the power amplifier integrated circuit will automatically stop the output, and when the temperature drops, it can automatically resume operation. However, in order to reduce the production cost, some speaker manufacturers use not the large-scale manufacturer's famous integrated circuit, but the use of some small-factor imitation integrated circuits, the quality is inferior. The solution is to buy a replacement of the same type of integrated circuit, the cost is only 5 dollars.
8. When the computer is turned on, the sound of the computer is normal, but after using it for a while, the "å—¡å—¡" sounds loudly and the ears can't stand it.
This fault is the same as the above example, but the power amplifier IC has not been completely damaged, and the fault occurs when it is overheated. We can open the case and increase the area of ​​the chip of the power amplifier IC. We can also replace the good quality film.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
1. The sound can be played normally, but the noise of "squeaky" will be heard from time to time.
The customer reported that there was no other noise when the computer was using the headphones, but the noise of the “squeaky†was occasionally issued when the speaker was used. Sometimes the time was longer, sometimes the time was shorter, and then it was normal. At first, it was suspected that the audio signal plug was not in good contact, but it was re-plugged. The replacement of the line still did not solve the problem. However, after the customer took the speaker to the company, he tried it for two consecutive days, but he never found the problem. The difference between before and after comparison, only the socket is different. At this time, I also remembered that the power socket on my desk, because of the poor quality, the contact is not strong, for a while strong, weak for a while, always cause the desk lamp to light for a while, dark for a while. It seems that the problem reflected by the customer is true. The reason is that the quality of the power socket is poor, and the quality of the phosphor bronze used inside is not good and the elasticity is poor. After a long time of use, the contact is not good. After a while, it will be disconnected. After a while, the power of the speaker will be turned on for a while, and will be broken. Because there is a large-capacity filter capacitor inside the power supply, the power supply voltage of the power amplifier circuit will be high, one will be low, and the sound intensity will change significantly. At the same time, because there will be interference signal of current on and off at the moment of switching. Breaking into the amplifier circuit can also cause other noise.
Solution: Replace the new high quality power outlet. Some profiteers may use the reasons that the customer does not understand, so as to demonstrate to the customer that the speaker has been repaired and collect money.
2. The sound can be played normally, but if you adjust the bass (BASS), the speaker will have a "beep" noise, which can't be tolerated.
Sometimes some speakers will have a "squeaky" noise when used, especially when the subwoofer knob is turned. Because it is caused by rotating the BASS knob, it can be sure that the BASS potentiometer is damaged. Most speakers' volume adjustments and subwoofer adjustments use a potentiometer to change the strength of the signal, in addition to the new digital tuning potentiometer. The potentiometer changes the value of the resistance by changing the position of the movable contact on the carbon block. As the use time increases, dust or impurities will fall into the potentiometer, and the contacts of the potentiometer may oxidize and rust, causing the contact to be unreal. At this time, the volume will be adjusted. The noise appeared. It is very simple to deal with this kind of problem. It is enough to replace a new potentiometer and it will cost no more than 2 yuan. However, the easiest way to do this is to open the case, open the four crimp tabs behind the potentiometer, the active contact of the lowest potentiometer, clean the carbon block with anhydrous alcohol, and then drop a drop of oil on the carbon block. The noise problem can be solved by installing the potentiometer in the original position. However, the reason for this example is that the mass of the potentiometer is unstable. In use, the reeds of the left and right channels are originally separated, but now they are dislocated, causing the time and break when used. "啪" noise. We just need to gently straighten it with a sharp-nipped scorpion, and then press it back in place. If there is similar noise when adjusting the volume, you can also repair it according to this method.
3. The sound plays normally, but one speaker sounds loud and one speaker sounds small. If you press the volume potentiometer to one side by hand, the volume of the two channels will be the same.
This fault is similar to the second one and is also a problem with the volume potentiometer. Because the left and right channels of the volume potentiometer are independent. Because the reeds have been used for too long, the inner reeds are too weak to be in close contact with the carbon barrier. Finally, the common ground of the potentiometer is directly connected, and the fault is eliminated.
4. Turn on the power switch of the speaker, and the speaker does not have a sound of â€œç °â€ when it is turned on normally. Turn on the MP3 player, adjust the volume, and the speaker does not have any sound.
This kind of fault is more common, and there is no sound in the speaker after booting. How do we judge that the speaker is really broken? First, before powering up the speaker, turn the volume pot to the maximum position. When turning on the power switch, pay attention to whether the speaker has a “beep†sound. If there is, it means that there is no problem with the speaker, the power supply is good, no sound may be the sound card driver error or sound failure, or it may be muted or the volume is too small, and the signal cable plug is not plugged. Or the signal line is broken. Also, if we touch the plug of the signal cable to the metal part of the chassis, the speaker will emit a "beep" hum, especially noticeable.
However, this example is because the speaker is used for too long, and the internal temperature is too high, causing the temperature inside the power transformer inside the speaker to fuse. Don't worry, we don't have to replace the power transformer. Just take the transformer carefully and look at the primary coil of the power transformer from the outside (that is, the end that is connected to 220V). On the side of the convex point, carefully peel off the plastic film on the surface with a sharp tweezer, and you will find a small white square with the words "250V2A" written. This is the temperature fuse. Because the use time is too long, the temperature of the transformer is too high. In order to avoid fire, the fuse resistor operates and cuts off the current supply. We only need to short-circuit the two ends of this fuse directly, but we need to pay attention to heat dissipation in the future use, do not use it for too long.
Many computer peripherals that use power transformers, such as external power supplies used by CANON and HP inkjet printers, power adapters used by external modems, external power supplies for some speakers, 220V/9V or 12V transformers in the cabinet, inside the coil Temperature protection resistors are added. In particular, the power transformers of CANON and HP printers are difficult to match, and the cost of finding a person to repair is also very high, but in actual maintenance, the transformer is taken apart, and the fuse is short-circuited according to the above method.
5. There is sound, but only high notes, but no bass.
This kind of fault is generally caused by the loud volume of the speaker, long-term use, burning the subwoofer that we usually say, or the thread is broken. Just spend a dozen dollars to replace a new one.
6. There is sound, but the sound is not clear, and the specific content cannot be heard.
In addition to damage to the tweeter, this type of failure may be a broken signal line or an integrated block of high-pitched amplification. Note: If you are using a soft sound card, sometimes you will inadvertently change the settings, and make the speaker's pronunciation, you can only hear the female voice, the male voice can not hear clearly.
7. As soon as the power is turned on, the “嗡嗡†sounds loudly. No matter how the volume is adjusted, the noise cannot be eliminated.
This situation is generally caused by long-term use, plus the speaker is closed, the heat can not be dissipated, the internal temperature is too high, and the integrated block is overheated and damaged. In fact, the genuine power amplifier integrated circuit has a temperature protection function. When overheated, the power amplifier integrated circuit will automatically stop the output, and when the temperature drops, it can automatically resume operation. However, in order to reduce the production cost, some speaker manufacturers use not the large-scale manufacturer's famous integrated circuit, but the use of some small-factor imitation integrated circuits, the quality is inferior. The solution is to buy a replacement of the same type of integrated circuit, the cost is only 5 dollars.
8. When the computer is turned on, the sound of the computer is normal, but after using it for a while, the "å—¡å—¡" sounds loudly and the ears can't stand it.
This fault is the same as the above example, but the power amplifier IC has not been completely damaged, and the fault occurs when it is overheated. We can open the case and increase the area of ​​the chip of the power amplifier IC. We can also replace the good quality film.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
1. The sound can be played normally, but the noise of "squeaky" will be heard from time to time.
The customer reported that there was no other noise when the computer was using the headphones, but the noise of the “squeaky†was occasionally issued when the speaker was used. Sometimes the time was longer, sometimes the time was shorter, and then it was normal. At first, it was suspected that the audio signal plug was not in good contact, but it was re-plugged. The replacement of the line still did not solve the problem. However, after the customer took the speaker to the company, he tried it for two consecutive days, but he never found the problem. The difference between before and after comparison, only the socket is different. At this time, I also remembered that the power socket on my desk, because of the poor quality, the contact is not strong, for a while strong, weak for a while, always cause the desk lamp to light for a while, dark for a while. It seems that the problem reflected by the customer is true. The reason is that the quality of the power socket is poor, and the quality of the phosphor bronze used inside is not good and the elasticity is poor. After a long time of use, the contact is not good. After a while, it will be disconnected. After a while, the power of the speaker will be turned on for a while, and will be broken. Because there is a large-capacity filter capacitor inside the power supply, the power supply voltage of the power amplifier circuit will be high, one will be low, and the sound intensity will change significantly. At the same time, because there will be interference signal of current on and off at the moment of switching. Breaking into the amplifier circuit can also cause other noise.
Solution: Replace the new high quality power outlet. Some profiteers may use the reasons that the customer does not understand, so as to demonstrate to the customer that the speaker has been repaired and collect money.
2. The sound can be played normally, but if you adjust the bass (BASS), the speaker will have a "beep" noise, which can't be tolerated.
Sometimes some speakers will have a "squeaky" noise when used, especially when the subwoofer knob is turned. Because it is caused by rotating the BASS knob, it can be sure that the BASS potentiometer is damaged. Most speakers' volume adjustments and subwoofer adjustments use a potentiometer to change the strength of the signal, in addition to the new digital tuning potentiometer. The potentiometer changes the value of the resistance by changing the position of the movable contact on the carbon block. As the use time increases, dust or impurities will fall into the potentiometer, and the contacts of the potentiometer may oxidize and rust, causing the contact to be unreal. At this time, the volume will be adjusted. The noise appeared. It is very simple to deal with this kind of problem. It is enough to replace a new potentiometer and it will cost no more than 2 yuan. However, the easiest way to do this is to open the case, open the four crimp tabs behind the potentiometer, the active contact of the lowest potentiometer, clean the carbon block with anhydrous alcohol, and then drop a drop of oil on the carbon block. The noise problem can be solved by installing the potentiometer in the original position. However, the reason for this example is that the mass of the potentiometer is unstable. In use, the reeds of the left and right channels are originally separated, but now they are dislocated, causing the time and break when used. "啪" noise. We just need to gently straighten it with a sharp-nipped scorpion, and then press it back in place. If there is similar noise when adjusting the volume, you can also repair it according to this method.
3. The sound plays normally, but one speaker sounds loud and one speaker sounds small. If you press the volume potentiometer to one side by hand, the volume of the two channels will be the same.
This fault is similar to the second one and is also a problem with the volume potentiometer. Because the left and right channels of the volume potentiometer are independent. Because the reeds have been used for too long, the inner reeds are too weak to be in close contact with the carbon barrier. Finally, the common ground of the potentiometer is directly connected, and the fault is eliminated.
4. Turn on the power switch of the speaker, and the speaker does not have a sound of â€œç °â€ when it is turned on normally. Turn on the MP3 player, adjust the volume, and the speaker does not have any sound.
This kind of fault is more common, and there is no sound in the speaker after booting. How do we judge that the speaker is really broken? First, before powering up the speaker, turn the volume pot to the maximum position. When turning on the power switch, pay attention to whether the speaker has a “beep†sound. If there is, it means that there is no problem with the speaker, the power supply is good, no sound may be the sound card driver error or sound failure, or it may be muted or the volume is too small, and the signal cable plug is not plugged. Or the signal line is broken. Also, if we touch the plug of the signal cable to the metal part of the chassis, the speaker will emit a "beep" hum, especially noticeable.
However, this example is because the speaker is used for too long, and the internal temperature is too high, causing the temperature inside the power transformer inside the speaker to fuse. Don't worry, we don't have to replace the power transformer. Just take the transformer carefully and look at the primary coil of the power transformer from the outside (that is, the end that is connected to 220V). On the side of the convex point, carefully peel off the plastic film on the surface with a sharp tweezer, and you will find a small white square with the words "250V2A" written. This is the temperature fuse. Because the use time is too long, the temperature of the transformer is too high. In order to avoid fire, the fuse resistor operates and cuts off the current supply. We only need to short-circuit the two ends of this fuse directly, but we need to pay attention to heat dissipation in the future use, do not use it for too long.
Many computer peripherals that use power transformers, such as external power supplies used by CANON and HP inkjet printers, power adapters used by external modems, external power supplies for some speakers, 220V/9V or 12V transformers in the cabinet, inside the coil Temperature protection resistors are added. In particular, the power transformers of CANON and HP printers are difficult to match, and the cost of finding a person to repair is also very high, but in actual maintenance, the transformer is taken apart, and the fuse is short-circuited according to the above method.
5. There is sound, but only high notes, but no bass.
This kind of fault is generally caused by the loud volume of the speaker, long-term use, burning the subwoofer that we usually say, or the thread is broken. Just spend a dozen dollars to replace a new one.
6. There is sound, but the sound is not clear, and the specific content cannot be heard.
In addition to damage to the tweeter, this type of failure may be a broken signal line or an integrated block of high-pitched amplification. Note: If you are using a soft sound card, sometimes you will inadvertently change the settings, and make the speaker's pronunciation, you can only hear the female voice, the male voice can not hear clearly.
7. As soon as the power is turned on, the “嗡嗡†sounds loudly. No matter how the volume is adjusted, the noise cannot be eliminated.
This situation is generally caused by long-term use, plus the speaker is closed, the heat can not be dissipated, the internal temperature is too high, and the integrated block is overheated and damaged. In fact, the genuine power amplifier integrated circuit has a temperature protection function. When overheated, the power amplifier integrated circuit will automatically stop the output, and when the temperature drops, it can automatically resume operation. However, in order to reduce the production cost, some speaker manufacturers use not the large-scale manufacturer's famous integrated circuit, but the use of some small-factor imitation integrated circuits, the quality is inferior. The solution is to buy a replacement of the same type of integrated circuit, the cost is only 5 dollars.
8. When the computer is turned on, the sound of the computer is normal, but after using it for a while, the "å—¡å—¡" sounds loudly and the ears can't stand it.
This fault is the same as the above example, but the power amplifier IC has not been completely damaged, and the fault occurs when it is overheated. We can open the case and increase the area of ​​the chip of the power amplifier IC. We can also replace the good quality film.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
For the rookie-level users, the most fear is that the product has a problem, and any small problems require people, it is extremely depressed. However, many times the faults can be solved by themselves. The following 52 hardware forum users collected and sorted out several common troubleshooting methods to help users. Maybe after reading it, you will find yourself a speaker.
1. The sound can be played normally, but the noise of "squeaky" will be heard from time to time.
The customer reported that there was no other noise when the computer was using the headphones, but the noise of the “squeaky†was occasionally issued when the speaker was used. Sometimes the time was longer, sometimes the time was shorter, and then it was normal. At first, it was suspected that the audio signal plug was not in good contact, but it was re-plugged. The replacement of the line still did not solve the problem. However, after the customer took the speaker to the company, he tried it for two consecutive days, but he never found the problem. The difference between before and after comparison, only the socket is different. At this time, I also remembered that the power socket on my desk, because of the poor quality, the contact is not strong, for a while strong, weak for a while, always cause the desk lamp to light for a while, dark for a while. It seems that the problem reflected by the customer is true. The reason is that the quality of the power socket is poor, and the quality of the phosphor bronze used inside is not good and the elasticity is poor. After a long time of use, the contact is not good. After a while, it will be disconnected. After a while, the power of the speaker will be turned on for a while, and will be broken. Because there is a large-capacity filter capacitor inside the power supply, the power supply voltage of the power amplifier circuit will be high, one will be low, and the sound intensity will change significantly. At the same time, because there will be interference signal of current on and off at the moment of switching. Breaking into the amplifier circuit can also cause other noise.
Solution: Replace the new high quality power outlet. Some profiteers may use the reasons that the customer does not understand, so as to demonstrate to the customer that the speaker has been repaired and collect money.
2. The sound can be played normally, but if you adjust the bass (BASS), the speaker will have a "beep" noise, which can't be tolerated.
Sometimes some speakers will have a "squeaky" noise when used, especially when the subwoofer knob is turned. Because it is caused by rotating the BASS knob, it can be sure that the BASS potentiometer is damaged. Most speakers' volume adjustments and subwoofer adjustments use a potentiometer to change the strength of the signal, in addition to the new digital tuning potentiometer. The potentiometer changes the value of the resistance by changing the position of the movable contact on the carbon block. As the use time increases, dust or impurities will fall into the potentiometer, and the contacts of the potentiometer may oxidize and rust, causing the contact to be unreal. At this time, the volume will be adjusted. The noise appeared. It is very simple to deal with this kind of problem. It is enough to replace a new potentiometer and it will cost no more than 2 yuan. However, the easiest way to do this is to open the case, open the four crimp tabs behind the potentiometer, the active contact of the lowest potentiometer, clean the carbon block with anhydrous alcohol, and then drop a drop of oil on the carbon block. The noise problem can be solved by installing the potentiometer in the original position. However, the reason for this example is that the mass of the potentiometer is unstable. In use, the reeds of the left and right channels are originally separated, but now they are dislocated, causing the time and break when used. "啪" noise. We just need to gently straighten it with a sharp-nipped scorpion, and then press it back in place. If there is similar noise when adjusting the volume, you can also repair it according to this method.
3. The sound plays normally, but one speaker sounds loud and one speaker sounds small. If you press the volume potentiometer to one side by hand, the volume of the two channels will be the same.
This fault is similar to the second one and is also a problem with the volume potentiometer. Because the left and right channels of the volume potentiometer are independent. Because the reeds have been used for too long, the inner reeds are too weak to be in close contact with the carbon barrier. Finally, the common ground of the potentiometer is directly connected, and the fault is eliminated.
4. Turn on the power switch of the speaker, and the speaker does not have a sound of â€œç °â€ when it is turned on normally. Turn on the MP3 player, adjust the volume, and the speaker does not have any sound.
This kind of fault is more common, and there is no sound in the speaker after booting. How do we judge that the speaker is really broken? First, before powering up the speaker, turn the volume pot to the maximum position. When turning on the power switch, pay attention to whether the speaker has a “beep†sound. If there is, it means that there is no problem with the speaker, the power supply is good, no sound may be the sound card driver error or sound failure, or it may be muted or the volume is too small, and the signal cable plug is not plugged. Or the signal line is broken. Also, if we touch the plug of the signal cable to the metal part of the chassis, the speaker will emit a "beep" hum, especially noticeable.
However, this example is because the speaker is used for too long, and the internal temperature is too high, causing the temperature inside the power transformer inside the speaker to fuse. Don't worry, we don't have to replace the power transformer. Just take the transformer carefully and look at the primary coil of the power transformer from the outside (that is, the end that is connected to 220V). On the side of the convex point, carefully peel off the plastic film on the surface with a sharp tweezer, and you will find a small white square with the words "250V2A" written. This is the temperature fuse. Because the use time is too long, the temperature of the transformer is too high. In order to avoid fire, the fuse resistor operates and cuts off the current supply. We only need to short-circuit the two ends of this fuse directly, but we need to pay attention to heat dissipation in the future use, do not use it for too long.
Many computer peripherals that use power transformers, such as external power supplies used by CANON and HP inkjet printers, power adapters used by external modems, external power supplies for some speakers, 220V/9V or 12V transformers in the cabinet, inside the coil Temperature protection resistors are added. In particular, the power transformers of CANON and HP printers are difficult to match, and the cost of finding a person to repair is also very high, but in actual maintenance, the transformer is taken apart, and the fuse is short-circuited according to the above method.
5. There is sound, but only high notes, but no bass.
This kind of fault is generally caused by the loud volume of the speaker, long-term use, burning the subwoofer that we usually say, or the thread is broken. Just spend a dozen dollars to replace a new one.
6. There is sound, but the sound is not clear, and the specific content cannot be heard.
In addition to damage to the tweeter, this type of failure may be a broken signal line or an integrated block of high-pitched amplification. Note: If you are using a soft sound card, sometimes you will inadvertently change the settings, and make the speaker's pronunciation, you can only hear the female voice, the male voice can not hear clearly.
7. As soon as the power is turned on, the “嗡嗡†sounds loudly. No matter how the volume is adjusted, the noise cannot be eliminated.
This situation is generally caused by long-term use, plus the speaker is closed, the heat can not be dissipated, the internal temperature is too high, and the integrated block is overheated and damaged. In fact, the genuine power amplifier integrated circuit has a temperature protection function. When overheated, the power amplifier integrated circuit will automatically stop the output, and when the temperature drops, it can automatically resume operation. However, in order to reduce the production cost, some speaker manufacturers use not the large-scale manufacturer's famous integrated circuit, but the use of some small-factor imitation integrated circuits, the quality is inferior. The solution is to buy a replacement of the same type of integrated circuit, the cost is only 5 dollars.
8. When the computer is turned on, the sound of the computer is normal, but after using it for a while, the "å—¡å—¡" sounds loudly and the ears can't stand it.
This fault is the same as the above example, but the power amplifier IC has not been completely damaged, and the fault occurs when it is overheated. We can open the case and increase the area of ​​the chip of the power amplifier IC. We can also replace the good quality film.
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