DOWNLOAD LG 47SL90QD-AA (CHASSIS:LB91L) Service Manual ↓ Size: 4.57 MB | Pages: 65 in PDF or view online for FREE

Model
47SL90QD-AA (CHASSIS:LB91L)
Pages
65
Size
4.57 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47sl90qd-aa-chassis-lb91l.pdf
Date
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Making 
Revision
2009. 2 . 1
LCD TV
Symptom
AV1 (CVBS) No Video
Problem
5/25
Check Signal format
Revision 
Problem
Check Signal format
Is it supported?
Check the RCA Cable
YES
MAIN B’D JK402 Check
Replace MAIN B’D JK402
YES
NO
Check MAIN B’D R420
Video Signal ?
NO
YES
Check MAIN B’D C217
Video Signal ?
Replace
MAIN B’D C217
NO
YES
Replace MAIN B’D IC 100
S
Making 
Revision
2009. 2 . 1
LCD TV
Symptom
AV2 (CVBS) No Video
Problem
6/25
Check Signal format
Revision 
Problem
Check Signal format
Is it supported?
Check the RCA Cable
YES
MAIN B’D JK402 Check
Replace MAIN B’D JK404
YES
NO
Check MAIN B’D R465
Video Signal ?
NO
YES
Check MAIN B’D C211
Video Signal ?
Replace
MAIN B’D C211
NO
YES
Replace MAIN B’D IC 100
S
Making 
Revision
2009. 2 . 1
7/25
LCD TV
Symptom
Component1 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 R421
Video Signal ?
NO
YES
Check MAIN B’D C200, C203 (Y)
C201 (Pb)
C202 (Pr)
Video Signal ?
Replace
MAIN B’D C200 or C203 or C201 or C202
NO
Video Signal ?
Replace MAIN B’D IC 100
YES
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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