Acer AL2423 W Service Manual page 41

2. Missing Color
Change
Cable
Change
R4,R8,R10,U
7
Change U7
or CN5 Cable
or Panel
Adjustment
R/G/B Color
Missing Color
NO
Check VGA or
NO
NO
LVDS Signal
NO
DVI Cable
Yes
Check
R4,R8,R10
Yes
Check CN5
Yes
Check OSD
R/G/B Gain
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Yes
Change
Panel