For newbie users, the most afraid thing may be the products have some problems, any small problem need ask someone to solve, this is really frustrating. However, sometimes we can solve some faults by ourselves. Here are a few common fault solutions, maybe you will find you also can become a master of the speakers after you read this article.

1.Sound can play normally, but sometimes there are some "beep beep" noise

Customer reflect the computer no other noise when using headphones, just use speakers will send some "beep, beep!" noise unregularlly which sometimes sound longer, sometimes shorter, then normal. I began to doubt the audio signal plug contact is bad, but after pluging in again, changing the line still not solve the problem. Customers take the speakers to the company, trial for two days, and the sperkers haven't found the problem. At this moment it occurred to me that the power socket on my desk, because the quality is bad, contact not firm, which always lead to my table lamp for light and dark for a while. This customer reflected in question is true, which because of the poor quality of the power socket, the quality of internal phosphorus copper is bad, flexibility is poor. After long time to use it that lead to weak contact, then the power supply of the speakers is also weak. Because inside of the power supply has a large capacity filter capacitance, which leads to power amplifier circuit of the power supply high voltage for a moment and low for a moment, the strength of the voice has obvious change; At the same time, because in the moment of on-off there will be a disturbance signal of the electric current break into the amplifier circuit, can also lead to other noise.

Solution: replace the new good quality power socket. Some repair shop could use customer don't know the reason, to demonstrate to the customer, speakers has been repaired, and to earn your money.

2.Sound can play normally, but if adjust heavy BASS, the horn will send "pa-pa" noise, which you can't bear it.

Sometimes some speakers have "pa-pa" noise when use them, especially when rotate heavy bass knob, it will be more serious. Because caused by rotating BASS knob, can definitely damage of BASS potentiometer. Most of speakers' volume and heavy bass adjustment all use the potentiometer to alter the strength of the signal, in addition to the new digital tuning potentiometer. Potentiometer change the size of the resistance value through a program contact to change the position of the carbon resistance. As the growth of the using time, that will have dust or impurities fall into the potentiometer, potentiometer contact can also be oxidized, which causing false contact, at this time in adjusting the volume there will be a "pa-pa" noise. For this issue we can easy to handle it, we just replace a new potentiometer, spend not more than 2 yuan. The most simple processing method that is open the case, open the four piece of pressure behind the potentiometer, press the activities contact of the potentiometer, wash resistance of carbon with anhydrous alcohol, again in the carbon resistance drop a drop of oil, put the potentiometer according to its original position then you can solve the problem of noise. But this case because the quality of the potentiometer is unstable, when used, left and right channels of reed was separate, but now because of dislocation, cause sometimes on or off when in use, then will occure the "pa-pa" noise. As long as we use needle-nose tweezers gently pull out, according to the right position loading back again. If you have similar noise when adjusting the volume, you also can be repaired according to the method.

3.Voice broadcast is normal, but one is a big horn, the other is a small horn. If forcibly break the volume potentiometer to the side with the hand, at this time as large as the volume of the two channels.

This fault is similar to the second, it still the problem of the volume potentiometer. Because of the volume potentiometer is independently around a track, reed used is too long, the inside of the reed elastic is too weak, which can't contact closely with the carbon resistance. Finally the potentiometer directly connected to the total end, and troubleshooting.

4.Turn on the speaker, the horn has not "bang" sound when the speaker turned on. Turn on the MP3 player, adjust volume, sound box is also without any sound.

This kind of failure are common, there is no sound after startup speakers. How do we judge speaker is really bad? First, before turn on the speakers, switch the volume to the largest position, when turn on the power switch, note whether there is a "bang" sound of the speaker. if there is, that means the speaker power supply is good, no sound may be sound card driver error or fault, also may be mute or the volume is too small, moreover it is the signal wire plug without plug, or line break line. Also, if we put the signal wire plug contact the chassis metal parts, speakers will particularly evident sound "hum hum".

However, this is because the speakers used for a long time, the internal temperature is too high, causing the power transformer blown fuse. Don't worry, we don't have to change the power transformer, as long as carefully remove the transformer, viewed from the appearance of power transformer primary winding (that is, the end of connect to the 220 v electrical), to see which side convex point. On the convex side, with sharp tweezers carefully apart on the surface of the plastic film, will find a small white squares with words "250 v2a", which is the temperature resistance. Because used for too long, the temperature of the transformer is too high, in order to avoid a fire, the insurance resistance movement, which cut off the current supply. As long as we keep this insurance at both ends of the resistor short-circuit directly, but we should pay attention to keep cooling when use it, do not use too long time.

Many people use the computer peripherals of power transformer, such as external power supply of the CANON and HP inkjet printers, the power adapter of external modems, some speakers used external power supply, the 220 v / 9 v or 12 v transformer in the case are equipped with the temperature insurance resistance. Especially CANON and HP printer power transformer are hard to match, asking someone to repair that repair fee is high, but the actual repair is unwrapped transformer, according to the above methods to short circuit it will be OK.

5.There is a voice, but only the high no bass.

This failure is because the volume of the speaker is too large, use for a long time, the subwoofer was burned down, or the line have broken. As long as spend ten yuan to replace a new.

6.There is a voice, but the voice is not clear, can't hear the content clearly.

This kind of failure in addition to the damage of loudspeakers, also may be a signal wire is broken, or high zoom integrated block is broken. Note: if you are using a soft sound, sometimes because of you inadvertently changed the setting, which make the speaker's pronunciation can only hear female's, male sound can't be heard.

7.When you turn on the computer, no matter how to adjust the volume that cannot eliminate noise.

This kind of situation it usually long time to use, coupled with sound box is closed, the heat isn't spread out, the internal temperature is too high, caused  integrated piece of the power amplifier overheating and then has damaged. In fact, authentic power amplifier integrated circuit with temperature protection function, when it overheating, power amplifier integrated circuit will automatically stop output, when the temperature came down, it return to work automatically. But some speakers manufacturer in order to reduce the production cost, they haven't use a big manufacturer brand integrated circuits, instead of a generic small factory integrated circuit which it is the inferior quality. The solution method is to buy a same model integrated circuit to replace, but cost 5 yuan.

8.The play sound is normal when Turn on the computer, then it occures “Weng-weng” noise after using a period of time and we can’t bear it.

This fault as same as above, but the power amplifier IC has not yet been thoroughly damaged, when overheating to malfunction. We can open the chassis, through increasing the area of the power amplifier IC pieces to solve, we also can change the good quality one.