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After Sale

If the amplifier mute turn red, how to check the problem? (Take FP20000Q power amplifier as an example)

Please follow the video steps: 

1. Remove the screw

2. Place the insulated cardboard 

3. Pull down the white line

4. Turn on your amplifier again.

5. See the mute light situation

- If mute turn red,the channel board has problem.

- If mute light don't turn red,the amplifier board has problem