Service manual

19″ LCD Monitor Wipro WA19W
35
No picture (LED orange)
No
p
icture
The button if under control
X401 oscillate
waveform is normal
Replace U401
Replace X401
Measure U701 Pin2=3.3V,
C704
(
+
)
=1.8V
Check Correspondent
com
p
onent
Replace U401
Check X401 oscillate waveform is normal
Check CN701,U701,Q702,Q703
OK
OK
O
K
OK
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal
Check HS/VS from CN101 is normal
Replace X401
Check Corres
p
ondent com
p
onent
NG
NG
OK