HP L1906

19" LCD Color Monitor HP L1906
34
No picture (LED orange)
No picture
OK
OK
NG
NG
Measure U601 PIN2=3.3V U602
PIN2=1.8V
Replace U601, U602
X301 oscillate waveforms are
normal
Replace X301
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