Philips 190S7 Service Manual page 43

19" LCD Color Monitor
(2). No Picture
Check if the sync signal from
computer is output and video cable
is connected normally
No picture
Measure U701 PIN2=3.3V,
U702 PIN2=1.8V?
NG
OK
X401 oscillate waveforms are
normal
NG
OK
NG
OK
Replace U401
Replace U701, U702
Replace X401
Input the sync signal of
computer, or change
the cable
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190S7