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Service Manual
(2). No Picture
X401 oscillate waveforms are normal
No picture
Measure U201 PIN2=3.3 V
Measure U202 PIN2=1.8 V
OK
OK
Check if the sync signal from
computer is output and video cable
OK
Replace U401
NG
Replace U201, U202
NG
Replace X401
NG
Input the sync signal of computer,
or change the cable
93
ASUS VK266H&VW266H
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