Service manual

17" LCD Color Monitor AOC 177Vk
36
No picture (LED orange)
No picture
The button if
under control
Measure D701(-)=1.8V
U702 PIN2=3.3V
Replace U401
X401 oscillate
waveform is normal
Check U701, D701,
D702, Q702
OK
OK
OK
OK
NG
Check HS/VS from
CN405 is normal
Replace X401
Check Correspondent
component
NG
NG
Replace U401