Acer AL1916 Service Manual page 33

2. No Characters , Missing one color
No
Change Power Board
Check Inverter From
Scaler board OK ?
OK
Check or Change
Cable Or Panel
No
Change VGA Cable
No Characters
Missing one color
Check CN4
5Vdc Output
OK
Check R96
5Vdc Output
OK
Check Q5
1.8Vdc Output
OK
Check U3(pin2)
3.3Vdc Output
OK
Check CN7 to Panel
Signal Output
OK
Check X }
Tal
14.318 Mhz ?
OK
Check H , V
SYNC ?
OK
Change U4
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No
Change Power Board
Check or Change
No
R96
Check or Change
No
Q5
Check or Change
No
U3
No
Change X1