Read LG 47SL80YD-DA (CHASSIS:LT91T) Service Manual online
Check the Component Cable
YES
Check MAIN B’D
C229, C230
MAIN B’D
C229 (Right Sound)
C230 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
Component Video OK ?
YES
Check MAIN B’D JK402
Replace MAIN B’D JK402
NO
YES
Making
전자 - 6-2
Revision
2009. 2 . 1
18/25
LCD TV
Symptom
Component1 No Audio Problem
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