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Acer Acer –LCD-H243H
42
4.2 Black screen
Check power supply:
Pin 1, 2 of CN104
POWER Fail
Check U101,
U102
Check C161,
R183
Check X101, C156,
C157,R191
Inverter Fail
U104 fail
Black Screen
Check Q102,
R101, R102
Check power supply:
For U104
Check reset:
pin 8 of U104
Check Crystal
waveform
Pin 25,26 of U104
Check CCFL_Enable
Pin 101 of U104
Check Pin 7 of CN104
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
NG