Specifications

20” LCD TV Color Monitor AOC L20S421
23
5. No Sound
Check the source
Reset source
Check signal filter circuit
NG
Replace the filter or inductance
Check TU100
Replace TU100
AV, component, S-video, PC signal
Check Amplifier TDA7266D U601
Replace U601
Check Earphone jack
Replace the Earphone jack
Check speakers
Replace speakers
Check relative circuit
No sound
OK
NG
OK
NG
OK
NG
OK
OK
NG
NG
OK
NG
OK
NG
Check TV system setup
SIF signal