Acer AL1932 Service Manual page 28

2. No Characters , Missing one color
No
Change Inverter Board
Check Inverter From
Scaler board OK ?
No
Check or Change
Cable Or Panel
No
Change VGA Cable
No Characters
Missing one color
Check CN1
12Vdc Output
OK
Check L4
5Vdc Output
OK
Check U2(pin2)
1.8Vdc Output
OK
Check U3(pin2)
3.3Vdc Output
OK
Check CN3 to Panel
Signal Output
OK
Check X Tal
14.318 Mhz ?
OK
Check H , V
SYNC ?
OK
Change U4
- 28 -
No
Change Adaptor
No Check or Chan ge
U1 , Q1 , D3
No Check or Change
U2
Check or Change
No
U3
No
Change X1