Acer H243, Service Manual

Page: 42 / 55

Acer
Acer –LCD-H243H
40
04 Troubleshooting
4.1 No Power & LED Off
yes
yes
yes
yes
NG
NG
NG
NG
NG
NG
Unstable power
Check sampling
Circuit
Check F801,
R808,R806
Change F801,
R808,R806
Check the R pin voltage
of IC803 about 2.5V
Check R832,IC801
Check
FB801,D803,C8
07,C810
if short
Change
FB801,D803,C807,
C810
Check pin6 of IC802
voltage is 14V
Check pin2 of
IC802 voltage
above 0.85V
Change R815, R 809, R848,
R 849, R850,R851
,C809,
END
Check the C
pin voltage of
IC803 if 3V
Change
IC803