TROUBLESHOOTING

No power

(LED indicator off)

:[A]Process

Check 15V or 5V

of Lips

Pass

Check Output of

U406

Pass

Check LED Assy

Pass

Check J103, J125, J126 Connector

Fail

Fail

Fail

Check short of main B/D or Change Lips

Check Output of

Q402Fail

Pass

Change U406

Change LED Assy

Change Q402

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Page 15
Image 15
LG Electronics 20LC1R-ZG service manual Troubleshooting, AProcess