Bush A632N - Audio and Power Troubleshooting

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No Sound
No Power (No LED Indicator)
Check the source
Reset source
NG
OK
Check input signal
TV SIF
Check TV system Reset TV system
NG
Check TU501
NG
Change TU501
Check U400
OK
OK
Change U400
NG
Check U600
OK
NG
Change U600
Check speaker
NG
Change speaker
Check if mute
OK
OK
NG
Check power cord and board interface
Plug in power cord and interface
OK
Check F901, BD901, C905
NG
Replace F901, BD901, C910
OK
Check IC901, IC902, IC950, IC951
NG
Replace IC901, IC902, IC950, IC951
OK
Check IC801 Replace IC801
NG
OK
Check T801
Replace T801
NG
OK
Check F901, BD901, C910
OK
OK