AOC L32W781B Service Manual page 28

32'' LCD TV
3. Abnormal display
Check the source
OK
Check signal filter circuit
OK
OK
Check U401
OK
Check panel
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NG
Reset source
NG
Replace the filter or inductance
Check TV system setup
Analog TV signal
Digital TV signal
Power supply U4
Component, PC signal
HDMI
Check u504
OK
Replace U401
28
AOC L32W781B
OK
NG
Check TU1
OK
NG
Check U1
Check TV system setup
OK
NG
Check TU1
OK
NG
OK
OK
Check U21
OK
Check U9,
NG
Check U202
NG
Replace U504
Replace T1
Replace U1
Replace TU1
Replace U4
Check U6,U7
OK
Check U12,U17
Replace U202