AOC N20W451T Service Manual page 25

20" LCD TV
6.4 Abnormal Display
Check the source
OK
Check signal filter circuit
OK
Check U401, U407
NG
Reset source
NG
Replace the filter or inductance
RF signal
AV, SCART1/2_CVBS signal
S-video SCART2_Y/C signal
PC signal
OK
NG
Replace U401
Check TV system setup
OK
NG
Replace TU101
Check TU101
Check U106
OK
Check U107
Check U104
NG
Replace U102
Check U102
25
NG
Replace U106
NG
Replace U107
NG
Replace U104
AOC N20W451T