Acer B173 Service Manual page 30

2. Missing Color
Change Cable
Change
R70,R73,R78
Change U7 or
CN8 Cable or
Panel
Adjustment
R/G/B Color
Missing Color
NO
R70,R73,R78
NO
NO
NO
Check VGA
Cable
Yes
Check
Yes
Check CN8
LVDS Signal
Yes
Check OSD
R/G/B Gain
Yes
Change Panel