Asus VH236H - No Picture Troubleshooting

Service Manual ASUS VH236H&VH232H
74
(2). No Picture
No picture
OK
OK
NG
NG
Replace U101 or U102
X401 oscillate waveforms are normal
Replace X401
Check if the sync signal from
computer is output and video cable
Input the sync signal of
computer, or change
Replace U401
NG
OK
Measure U101 PIN2= 3.3V
Measure U102 PIN2= 1.8V