AOC 2436VH - Trouble Shooting

24" LCD Color Monitor AOC 2436Vh
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9.2 Trouble Shooting
9.2.1 Main Board
No Power
Press power key and look
if the picture is normal
Please reinsert and make sure
the AC of 100-240 is normal
Measure U702 Vout=3.3V,
U703 Vout =1.2V
Reinsert or check the
power section
X401 oscillate waveforms are
normal
Check
U702,U703,CN701
Replace U401
Replace X401
OK
OK
OK
NG
NG
NG
NG
No power