27LZ5RV-ZC (CHASSIS:ML-041D) - LG TV Service Manual (repair manual). Page 15

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TROUBLESHOOTING
No power 
(LED indicator off)
No Power 
(LED indicator off)
Change IC1300, IC4 or IC6
Change LED Assy
Check 24V or 12V 
of Power B/D
Check Output of 
IC1300, IC4 or IC6
Check LED Assy
Check P101 Connector 
Faill
Faill
Change L3, L1300
Check Output of 
L3, L1300
Faill
Faill
Pass
Pass
Pass
:[A]Process
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