AOC L19AS73 Service Manual page 24

19" LCD TV
4.5 No sound
Check the source
OK
Check signal filter circuit
OK
Check Earphone jack
OK
Check U400
OK
Check U600
OK
Check Speaker
NG
Reset source
NG
Replace the filter circuit
NG
Replace the Earphone jack
SIF signal
AV, S-video, HDMI,PC signal
NG
NG
Replace U600
NG
Replace Speaker
24
Check TV system setup
OK
NG
Check Tuner U101
Replace U400
AOC L19AS73
Replace Tuner U101