Service manual

17” LCD Color Monitor Wipro WLA171t
33
8.2 Trouble Shooting
8.2.1 Main Board
No Power
Please reinsert and make sure
the AC of 100-240 is normal
No power
Press power key and look
if the picture is normal
Measure U201 PIN2=2.5V
U202 PIN2=3.3V
Reinsert or check the
Adapter/Inverter
section
X601 and X401 oscillate
waveforms are normal
Check CN201 or replace
U201, U202
Replace U401
Replace U601
Replace X601, X401
OK
OK
OK
NG
NG
NG
NG
NG