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Acer Acer –LCD-D240H
04 Troubleshooting
4.1 Black Sreen
Check power supply:
Pin 3, 4 of CN101
POWER Fail
Check U101,
U106
Check C125,
R133
Check X101, C126,
C114,R134
Inverter Fail
U102 fail
Black Screen
Check power supply:
For U102
Check reset:
pin114 of U102
Check Crystal waveform
Pin 116,117 of U102
Check CCFL_Enable
Pin 100 of U102
Check Pin 105 of
CN102
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
NG
OK