LG 22LG3000 Service Manual page 26

5. No Sound
No sound
Reset source
Check the source
OK
NG
Replace the filter or inductance
Check signal filter circuit
NG
Replace the Earphone jack
Check Earphone jack
SIF signal Check TV system setup
OK
OK
NG
Check TU201
Replace TU201
NG
Check relative circuit
AV, component, S-video, PC signal
NG
Check Amplifier TDA8932BTW U602
Replace U602
OK
NG
Replace speaker
Check speaker
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