Acer X191W Service Manual page 42

2. Missing Color
Change
Cable
Change
R1,R5,R10,
U2
Change U4
or CN7 Cable
or Panel
Adjustment
R/G/B Color
Missing Color
NO
NO
NO
NO
Check VGA
Cable
Yes
Check
R1,R5,R10
Yes
Check CN7
LVDS Signal
Yes
Check OSD
R/G/B Gain
Yes
Change
Panel