LG Flatron E2260S - Troubleshooting Guide; No Power Troubleshooting

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Copyright © 2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only
Only for training and service purposes
TROUBLESHOOTING GUIDE
1. NO POWER
No Power
(Power Indicator Off)
Please reinsert and
make sure the AC of
100-240V is normal
Measure
U702 PIN2=3.3V
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Check the Adapter/convert
section
Check CN702 or
replace U702
NO
NO
YES
YES
YES
Check X401 oscillate
waveforms are normal
Replace X401
Replace U401
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NO