DOWNLOAD LG 42SL90QD-DA (CHASSIS:LT91L) Service Manual ↓ Size: 4.5 MB | Pages: 69 in PDF or view online for FREE

Model
42SL90QD-DA (CHASSIS:LT91L)
Pages
69
Size
4.5 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42sl90qd-da-chassis-lt91l.pdf
Date
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LG 42SL90QD-DA (CHASSIS:LT91L) Service Manual ▷ View online

Check the RCA Cable
YES
Check MAIN B’D
C2008, C2009
MAIN B’D
C2008 (Right Sound)
C2009 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
AV2 Video OK ?
YES
Check MAIN B’D JK402
Replace MAIN B’D JK402
NO
YES
Making 
전자 - 6-2
Revision 
2009. 2 . 1
17/25
LCD TV
Symptom
AV2 No Audio Problem
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
Check the Component Cable
YES
Check MAIN B’D
C2013, C2014
MAIN B’D
C2013 (Right Sound)
C2014 (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
19/25
LCD TV
Symptom
Component2 No Audio Problem
Check the PC Audio Cable
YES
Check MAIN B’D
C2015, C2016
MAIN B’D
C2015 (Right Sound)
C2016 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
RGB Video OK ?
YES
Check MAIN B’D JK401
Replace MAIN B’D JK401
NO
YES
Making 
전자 - 6-2
Revision 
2009. 2 . 1
20/25
LCD TV
Symptom
RGB, HDMI-PC No Audio Problem
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