In fact, the power amplifier, like people, sometimes gets sick and there are some minor problems in the body.
At this time, please don't worry, just find the root of the problem in time and solve the problem.
When the MUTE light of the power amplifier is on, one of its channels is distorted, which means that one of the power amplifier boards or the channel board of the power amplifier cannot work normally.
What should I do if the MUTE light is on?
Which channel of the amplifier MUTE light is on, it means that there is a problem with the corresponding power amplifier board or channel board, then we need to open the corresponding power amplifier board of the MUTE light, and then unplug the 8 Pins cable for testing.
Let's do it!
Which channel's MUTE light is on, we have to twist the screwand open the channel plate that the corresponding MUTE light is on.
The power amplifier boards corresponding to the A, B, C, and D channels are as shown in the following figure.
Below operation Step 1-3 is under amplifier power off state.
If you have turned on the amplifier,
Please wait 15 minutes before operating it.
Insulation should be paid between the board and the board in the power amplifier. If it is not insulated, the two boards are in contact with each other, which is likely to cause a short circuit.
Therefore, after disassembling a power amplifier board, it is necessary to place the insulation board underneath it to avoid contact with the lower board.
Find the 8 Pins cable below the corresponding power amplifier board and unplug it.
Unplug the 8 Pins and turn on the amplifier switch.
At this time, if the MUTE light of the power amplifier is not lit, it indicates that there is a problem with the corresponding power amplifier board. If the MUTE light continues to illuminate, there is a problem with the channel board.
View below Video, you will more clear!
Have you learnt that? I hope this article can help you.
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