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