Acer AL2017 - Troubleshooting; Abnormal Display Troubleshooting

Acer Service Manual
7. Unstable Power
Unstable power
Check sampling
Circuit
Check R822,
R823, R824
Change R822,
R823, R824
Check the R pin
voltage of IC803
about 2.5V
Check R819, R820
Check R818, D804,
C807 if short
Change
R818,
D80
4
,
Check pin2
of IC802
voltage is 3V
Check pin1 of
IC802 voltage
below 1V
Change R808, R
809, R810, R 811,
R815,
END
Check the C
pin voltage of
IC803 if 3V
Change
IC803
27