Asus VW198T Service Manual page 36

19" LCD Color Monitor
(2). No Picture
X201 oscillate waveforms are normal
No picture
Measure U701 PIN2=3.3V
Measure U702 PIN2=1.8V
OK
OK
Check if the sync signal from
computer is output and video cable
OK
Replace U202
NG
Replace U701 or U702
NG
Replace X201
NG
Input the sync signal of
computer, or change
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ASUS VW198T