Troubleshooting Guide - LG FLATRON E2040S Service Manual

(Power Indicator Off)
Measure
U701 PIN2=3.3V
Check X401 oscillate
waveforms are normal
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TROUBLESHOOTING GUIDE

No Power
Please reinsert and
make sure the AC of
100-240V is normal
YES
YES
YES
Replace U401
1. NO POWER
NO
NO
NO
- 18 -
Check the Adapter/Inverter
section
Check CN702 or replace
U701
Replace X401
LGE Internal Use Only