No Picture - BenQ G900WA Service Manual

19" LCD Color Monitor

(2) No picture

No picture
Measure U201 PIN2=3.3V
OK
X401 oscillate waveforms are
normal
OK
Check U401
OK
Check if the sync signal from
computer is output and video cable
is connected normally
OK
Replace U501
NG
Replace U201
NG
Replace X401
NG
Replace U401
NG
Input the sync signal of
computer, or change
the cable
37
BenQ G900WA