Acer | Acer |
4.2Black screen
Black Screen
Check power supply: |
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| NG |
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Pin 1, 2 of CN104 |
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OK |
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Check power supply: |
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| NG |
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For U104 |
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OK |
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Check reset: |
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| NG |
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pin 8 of U104 |
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OK |
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Check Crystal |
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| NG |
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waveform |
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Pin 25,26 of U104 |
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OK |
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Check CCFL_Enable | OK | Check Pin 7 of CN104 | NG |
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Pin 101 of U104 |
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NG |
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U104 fail |
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| OK |
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POWER Fail
Check U101,
U102
Check C161,
R183
Check X101, C156,
C157,R191
Inverter Fail
Check Q102,
R101, R102
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