Read LG 47SL90QD-AA (CHASSIS:LB91L) Service Manual online
Making
Revision
2009. 2 . 1
19/25
LCD TV
Symptom
Component2 No Audio Problem
Component Video OK ?
Revision
Check the Component Cable
YES
YES
Check MAIN B’D JK402
Replace MAIN B’D JK402
NO
YES
MAIN B’D
C2013 (Right Sound)
C2014 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
Check MAIN B’D
C2013, C2014
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