LG Flatron L1918S

17
TROUBLESHOOTING GUIDE
No Power
(Power Indicator Off)
Please reinsert and
make sure the AC of
100-240 is normal
Measure Q702
Vout=1.8V U701
PIN2=3.3V
Check the Adapter/Inverter
section
Check CN701 or replace
Q702, U701
NO
NO
YES
YES
1. NO POWER
Check X401 oscillate
waveforms are normal
Replace U401
Replace X401
NO
YES