At present, some domestically produced equipments have relatively more faults in the equipment itself. For individuals, it is more difficult to solve them. Some problems have troubles to solve the problems. So today, I will share with you how to solve the difficulties of the audio. Briefly introduce the common faults of professional audio equipment: First, the mixer itself is faulty: 1. The volume fader is not in good contact, and the sound is intermittent when working. 2. Channel input port failure, such as the XLR card input port of the old Budweiser mixer, it is easy to "root up", I can't believe my eyes when I start to encounter such a fault. 3. The control system is disordered. Once I used a vocal 16-channel mixer, I found that there was no signal from the total output. Later I changed to the group output. There is no signal output after the group is selected, and I am pushing the 10th road. When you push the fader, it is indeed the sound of the 11th channel. Later, I used the AUX output signal and so on. Finally, the console was completely destroyed. At this time, the performance can not be cold, I also simply put the CD machine signal directly to the amplifier to put music. The console malfunction like this has been encountered for the first time in so many years, and I have never heard of it before. In short, the fault of the mixer is nothing more than the input part, the output part, the control part, the power supply part, etc., which is generally caused by the aging of the equipment. Second, the equalizer common fault: 1. Equalizer push-pull key contact failure, which is the most common, mainly due to equipment aging and poor environment. 2. The internal circuit of the equalizer is faulty. I have seen some equalizers only have one signal output. Later, I found that the circuit was broken, and such an equalizer is not a minority. I have encountered it several times. Third, the limiter, electronic crossover, professional feedback suppressor, professional delay, and other common faults: In addition to severe equipment aging, these devices generally do not have major problems. At most, the adjustment knob and the rear panel signal jack are a bit small. Fourth, digital effects common faults: 1. Noise problem, the digital effect device has a certain digital noise when processing the audio signal. If the signal line is not well shielded, the noise will be like rain when it is serious. 2. The core part of the digital effect device is the digital processing chip. When these digital chips are also faulty, I have seen a YAMAHA500 effect device that can be turned on but can't work. The programs inside can't be adjusted and used. Complex digital chips can't be repaired at all. Five, power amplifier and speaker common faults: 1. The most common fault of the power amplifier is the bad capacitor or the burnout. This has problems we use, but most of the equipment is unstable. 2. Another one I also found that some amplifiers will have a fault with no sound in the channel, and the problem is still inside the circuit. 3. As for other faults, what is the difference between the power amplifier volume potentiometer, the left and right channel imbalance, the protection function is too frequent, the rear panel work changeover switch is not good, and the signal socket is good. In short, the power amplifier is compared in the current audio system. An electrical device that is prone to failure. 4. The most common fault of the speaker is of course the speaker problem. It can be said that the most common fault in a sound system is to burn the speaker. This is of course a human factor, but most of them are still the quality of the speaker itself. 5. Another common fault of the speaker is that the wiring port is aging, the contact is bad, especially the speaker that is constantly flowing is prone to such a fault. The above equipment itself is faulty. Generally, the sound engineer can't repair it. In the previous article, I said that the sound engineer should be "professional". If the power amplifier is broken and the speaker is broken, those are maintenance engineers. The sound range of the sound engineer is to match the sound system and adjust the sounds. Square LED module, LED Lens Modules, Led Replacement Modules, Led Lights Source PCB Modules Shenzhen Isource lighting Co., Ltd , https://www.isourceled.com
Black electricity common sense daily new knowledge: audio troubleshooting method
[Audio Network Information]