AOC 2210S Service Manual page 31

22" LCD Color Monitor
(2). No Picture
X401 oscillate waveforms are normal
Check if the sync signal from
computer is output and video cable
No picture
Measure U702 PIN2=3.3V
D701(-)=1.8V
NG
OK
NG
OK
NG
OK
Replace U401
Replace U702, Q702 or
D701
Replace X401
Input the sync signal of
computer, or change the
31
AOC 2210S