Acer AL1516 - Page 34

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2. No picture (LED is orange)
No picture
OK
OK
NG
NG
Measure U701 PIN2=3.3V
U702 PIN2=3.3V
Replace U701, U702
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