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20HIZ12 (CHASSIS:ML-041F) - LG TV Service Manual (repair manual). Page 15

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- 15 -
TROUBLESHOOTING
No power 
(LED indicator off)
Check short of main B/D 
or Change Lips
Change IC1107, IC1104
Change LED Assy
Check 15V or 5V 
of Lips
Check Output of 
IC1107, IC104
Check LED Assy
Check P1100, P210 Connector 
Fail
Fail
Change Q1100
Check Output of 
Q1100
Fail
Pass
Fail
Pass
Pass
Pass
:[A]Process
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