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47SL90QD-AA (CHASSIS:LB91L) - LG TV Service Manual (repair manual). Page 48

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

Making 
Revision
2009. 2 . 1
8/25
LCD TV
Symptom
Component2 No Video/ 
No Color Problem
Check Signal format
Revision 
No Color Problem
g
Is it supported?
Check the Component Cable
YES
MAIN B’D JK402 Check
Replace MAIN B’D JK402
YES
NO
Check MAIN B’D R422
Video Signal ?
NO
YES
Check MAIN B’D C214, C209 (Y)
C215 (Pb)
C216 (Pr)
Video Signal ?
Replace
MAIN B’D C214 or C209 or C215 or C216
NO
Video Signal ?
Replace MAIN B’D IC 100
YES
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