15" LCD Color Monitor HP VP15
34
No picture (LED is orange)
No picture
OK
OK
NG
X401 oscillate waveforms
are normal
Replace X401
Check if the sync signal from
computer is output and video cable
is connected normally
Input the sync signal of computer, or
change the cable
Replace U401
NG
OK
Measure U702 PIN2=3.3V; Q702 C = 1.8V
Replace U702/Q702
NG
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