Read LG 37SL80YD-AA (CHASSIS:LB91T) Service Manual online
Making
Revision
2009. 2 . 1
17/25
LCD TV
Symptom
AV2 No Audio Problem
AV2 Video OK ?
Revision
Check the RCA Cable
YES
YES
Check MAIN B’D JK402
Replace MAIN B’D JK402
NO
YES
MAIN B’D
C2008 (Right Sound)
C2009 (Left Sound)
signal ?
YES
Replace MAIN B’D IC 100
Check MAIN B’D
C2008, C2009
NO
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