DOWNLOAD LG 42LH4000 / 42LH4010 / 42LH4020 (CHASSIS:LD91G) Service Manual ↓ Size: 3.98 MB | Pages: 73 in PDF or view online for FREE

Model
42LH4000 42LH4010 42LH4020 (CHASSIS:LD91G)
Pages
73
Size
3.98 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lh4000-42lh4010-42lh4020-chassis-ld91g.pdf
Date
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LG 42LH4000 / 42LH4010 / 42LH4020 (CHASSIS:LD91G) Service Manual ▷ View online

Check Signal format
Is it supported?
Check the CVBS Cable
YES
MAIN B’D JK402 Check
Replace MAIN B’D JK402
YES
NO
Check MAIN B’D R400
Video Signal ?
NO
YES
Check MAIN B’D C217
Video Signal ?
Replace MAIN B’D C217
NO
Replace MAIN B’D IC 100
YES
Making 
Revision 
2009. 2 . 1
 LCD TV
Symptom
AV3(CVBS) No Video Problem
26~42LH2000
32~47LH3000/LH4000
10/34
Check Spec (Refer to User Manual)
Is it supported?
Check the SCART Cable
YES
Check the Trouble Shooting Guide
Analog TV No video
YES
Check MAIN B’D R1205
Video Signal ?
NO
Replace MAIN B’D Q1205
YES
Check MAIN B’D C1107
Video Signal ?
NO
MAIN B’D JK1100 Check
YES
Making 
Revision 
2009. 2 . 1
11/34
 LCD TV
Symptom
AV1 No Video Out Problem
26~42LH2000
32~47LH3000/LH4000
Check Spec (Refer to User Manual)
Is it supported?
Check the SCART Cable
YES
YES
Check MAIN B’D C1122
Video Signal ?
NO
MAIN B’D JK1101 Check
YES
Replace MAIN B’D IC 100
Making 
Revision 
2009. 2 . 1
12/34
 LCD TV
Symptom
AV2 No Video Out Problem
26~42LH2000
32~47LH3000/LH4000
Check Signal format
Is it supported?
Check the Component Cable
YES
MAIN B’D JK400 Check
Replace MAIN B’D JK400
YES
NO
Check MAIN B’D R419
Video Signal ?
NO
YES
Check MAIN B’D C209, C215 (Y)
C216 (Pb)
C214 (Pr)
Video Signal ?
Replace
MAIN B’D C209 or C214 or C215 or C216
NO
Replace MAIN B’D IC 100
YES
Making 
Revision 
2009. 2 . 1
13/34
 LCD TV
Symptom
Component No Video/
No Color Problem
26~42LH2000
32~47LH3000/LH4000
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