Hyundai HLCD-A20W4 Service Manual page 23

20" LCD TV
5. No Sound
Check the source
Check signal filter circuit
Check Earphone jack
Check Amplifier TPA3002D2 U606
No sound
NG
Reset source
OK
NG
OK
NG
NG
SIF signal
OK
NG
AV, component, S-video, PC signal
NG
OK
NG
Replace speakers
Check speakers
Replace the filter or inductance
Replace the Earphone jack
OK
Check TV system setup
OK
Check TU100
Replace U606
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Hyundai HLCD-A20W4
NG
Replace TU100
OK
Check relative circuit