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47SL90QD-AA (CHASSIS:LB91L) - LG TV Service Manual (repair manual). Page 60

Read LG 47SL90QD-AA (CHASSIS:LB91L) Service Manual online

Making 
Revision
2009. 2 . 1
20/25
LCD TV
Symptom
RGB, HDMI-PC No Audio Problem
RGB Video OK ?
Revision 
Check the PC Audio Cable
YES
YES
YES
Check MAIN B’D JK401
Replace MAIN B’D JK401
NO
YES
MAIN B’D
C2015 (Right Sound)
C2016 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
Check MAIN B’D
C2015, C2016
NO
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