LG Z15LCD1 Service Manual - Page 14
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5. No Sound No sound Check the source OK Check signal filter circuit Reset source NG Replace the filter or inductance Check Earphone jack OK NG Replace the Earphone jack SIF signal Check TV system setup OK Check TU100 NG Replace TU100 AV, component, S-video signal NG Check relative circuit Check Amplifier U601 TDA7266D NG Replace U601 OK Check speaker NG Replace speaker - 14 -
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5. No Sound
Check the source
OK
Reset source
Check signal filter circuit
NG
Replace the filter or inductance
OK
NG
SIF signal
Check TV system setup
OK
Check TU100
Replace TU100
AV, component, S-video signal
NG
Check Amplifier U601 TDA7266D
Replace U601
Check Earphone jack
NG
Replace the Earphone jack
OK
Check speaker
NG
Replace speaker
Check relative circuit
NG
No sound