Acer AL1716 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 CN1
5Vdc Output
OK
Check Fuse 1
5Vdc Output
OK
Check U1(pin2)
3.3Vdc Output
OK
Check U3(pin2)
2.5Vdc Output
OK
Check CN5 to Panel
Signal Output
OK
Check X'TAL
24.576 MHz?
11.0592MHz?
OK
Check H , V
SYNC ?
OK
Change U6
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No
Change
Power Board
No Check or Change
Fuse 1
No Check or Change
U1
No Check or Change
U3
No
Change X'TAL