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TROUBLESHOOTING
Check audio input circuit
Check mute circuit and reset
circuit
OK
Check the bus circuit
Check the periphery circuit
Done
of U12
OK
Change U12 IC
Done
Done
Has video but no audio
Chech if the volume set to
"0" or if it is mute
N
Check the amplifier
power supply
Y
NO
Check this
circuit
OK
Done
Done
Don
e
51
TROUBLESHOOTING
Y
Done
52
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