AOC 931Fwz - Troubleshooting; Main Board Troubleshooting

19" LCD Color Monitor AOC 931Fwz
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8.2 Trouble Shooting
8.2.1 Main Board
(1). No Power
No power
Press power key and look
if the picture is normal
Please reinsert and make sure
the AC of 100-240 is normal
Reinsert or check the
Adapter/Inverter section
X401 oscillate waveforms
are normal
Replace U701
Replace U401
Replace X401
OK
OK
OK
NG
NG
NG
NG
Measure U701 PIN2=3.3V