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37SL80YD-AA (CHASSIS:LB91T) - LG TV Service Manual (repair manual). Page 59

Read LG 37SL80YD-AA (CHASSIS:LB91T) Service Manual online

Making 
Revision
2009. 2 . 1
18/25
LCD TV
Symptom
Component1 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
C229 (Right Sound)
C230 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
Check MAIN B’D
C229, C230
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