Troubleshooting; No Power & Led Off - Acer H243 Service Manual

Acer
Unstable power
Check sampling
Circuit
Check the R pin voltage
of IC803 about 2.5V
yes
Check pin6 of IC802
voltage is 14V
yes
Check pin2 of
IC802 voltage
above 0.85V

04 Troubleshooting

4.1 No Power & LED Off
NG
NG
NG
NG
yes
END
Check F801,
R808,R806
Check the C
pin voltage of
IC803 if 3V
NG
Check R832,IC801
Check
FB801,D803,C8
if short
07,C810
yes
Change
FB801,D803,C807,
C810
Change R815, R 809, R848,
,C809,
R 849, R850,R851
40
Acer –LCD-H243H
NG
Change F801,
R808,R806
Change
IC803