Acer AL1712, Service Manual

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2. No Characters , Missing one color
No Characters
Missing one color
Check CN2
12Vdc Output
Change Power Board
Check L6
5Vdc Output
Change Power Board
Check or Change
U6 , Q6 , D1
Check U1(pin2)
2.5Vdc Output
Check or Change
U1
Check U7(pin2)
3.3Vdc Output
Check or Change
U7
Check CN1 to Panel
Signal Output
Check or Change
Cable Or Panel
Check Inverter From
Power board OK ?
Check X’Tal
14.318 Mhz ?
Change X1
Check H , V
SYNC ?
Change VGA Cable
Change U2
No
No
No
No
No
OK
OK
OK
OK
OK
OK
OK
No
No
No
3. No Audio
No Audio
Check Input Signal
CN7 OK ?
Check Input source
Or Change CN7
Check CN5 to Speaker
OK ?
Change Speaker or
CN5(Cable)
Change U8 or Q9 or U5
Check U8(Pin6)Volume
& Q9 & U5 OK ?
Check U8Pin12(Mute)
& Q8 & U5 OK ?
Change U8 or Q8 or U5
OK
OK
OK
No
No
No
No