How to solve the common malfunction of loudspeaker

For the majority of users, in the use of multimedia speakers will not be particularly fastidious, many users because of the product structure of the unfamiliar and lack of knowledge, often in the speaker after a small failure is also made to make use of, really can not re-change, in fact, many multimedia speaker repair is very simple, The average user can easily take care of it.

The following compilation of the Internet on the collection of some of the common problems of multimedia speakers repair data, summarized as the following points, the vast numbers of netizens may wish to look patiently, perhaps some of the methods can solve your problem.

A crackling sound appears when you adjust the volume, and the volume is small when it is large.

This is the number of multimedia speakers on the most frequently failures, I believe many users have this experience, in the use of a period of time, adjust the volume of the speaker will often appear this situation. Many users have chosen to use the computer system to adjust the volume adjustment, which is undoubtedly a stopgap measure.

In fact, as long as this situation can be judged to adjust the volume of the phase device is out of the question. Most speakers use a potentiometer to change the strength of the signal (except for digital tuning potentiometers), which allows for volume adjustment and heavy bass adjustment. And the potentiometer is through an active contact, to change the position on the carbon resistance sheet, so as to change the resistance value of the size. As the use of time increases, the potentiometer will be dust or impurities fall into, the contact point of the potentiometer may also be oxidized rust, resulting in contact is not real, then adjust the volume is there will be a "crackling" noise appears.

The solution is relatively simple, just need to replace a new potentiometer is enough, its cost will not exceed 2 yuan. However, the simplest way to do this is to open the speaker, and then open the four crimp pads on the back of the potentiometer to reveal the active contact point of the potentiometer. Then, use anhydrous alcohol to clean the carbon resistance sheet, and then drop a drop of oil on the carbon resistance sheet, and finally put the potentiometer in the original position can be installed to solve the noise problem.

Of course, this is the situation most people will encounter. But there is also a reason for the above failure: the quality of the potentiometer is unstable. In use, the left and right channels of the reed is originally separated, but now because of dislocation, resulting in the use of time when the break, which produced the "Bang Phala" noise. To deal with this is also very simple, we just use the nose tweezers gently pull, and then put back in place can be.