Trouble Shooting - Asus VH236H Service Manual

Service Manual

11. Trouble Shooting

11.1 Main Board
(1). No Power
Press power key and look if
the picture is normal
Please reinsert and make
sure the AC of 100-240 is
Measure U101 PIN2= 3.3V
Measure U102 PIN2= 1.8V
No power
NG
OK
OK
X401 oscillate waveforms
are normal
OK
Replace U401
NG
Reinsert or check the
Adapter/Inverter section
NG
Replace U101 or U102
NG
Replace X401
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ASUS VH236H&VH232H