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Acer
1. No Power & LED Off
Unstable power
Check sampling
Circuit
Check the R pin
voltage of IC803
about 2.5V
Check pin2 of
IC802 voltage is
3V
Check pin1 of
IC802 voltage
below 1.1 V
04 Troubleshooting
Check R822, R823,
R824, R825
Check the C pin
voltage of IC803
if 3V
Check R832
Check R818, D804,
Change R808, R 809,
R810, R 811, R812,
R814,Q803
END
35
Acer –LCD-B&V223HQ
Change R822, R823,
R824, R825
Change
IC803
C807 if short
Change R818,
C807
D804,
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