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15LS1R (CHASSIS:LP68A) - LG TV Service Manual (repair manual). Page 14

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- 14 -
TROUBLESHOOTING
No power 
(LED indicator off)
Check short of main B/D 
or Change Lips.
Change IC903.
Change LED Assy.
Check 15V or 5V 
of Lips.
Check Output of 
IC903.
Check LED Assy.
Check P901, P270,  Connector.
Fail
Fail
Change Q904.
Check Output of 
Q904.
Fail
Pass
Fail
Pass
Pass
Pass
:[A]Process
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