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19" LCD Color Monitor AOC 919Swa
31
No picture (LED orange)
No picture
OK
OK
NG
NG
Measure U404 Vout=3.3V
U405 Vout=1.8V
Replace
U404,U405,CN404
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