DOWNLOAD LG 42LF2500 / 42LF2510 (CHASSIS:LD91A) Service Manual ↓ Size: 5.78 MB | Pages: 78 in PDF or view online for FREE

Model
42LF2500 42LF2510 (CHASSIS:LD91A)
Pages
78
Size
5.78 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lf2500-42lf2510-chassis-ld91a.pdf
Date
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LG 42LF2500 / 42LF2510 (CHASSIS:LD91A) Service Manual ▷ View online

Check RF Cable
MAIN B’D L1201 = 5V ?
YES
 MAIN B’D L1202 = 3.3V ?
NO
Replace MAIN B’D IC809
YES
NO
Replace MAIN B’D IC808
MAIN B’D IC804
Pin #2 = 1.2V ?
Replace MAIN B’D IC804
YES
NO
YES
MAIN B’D R1210 Clock ?
NO
Replace MAIN B’D TU1200
Making 
Revision 
2009. 2 . 1
 LCD TV
Symptom
Digital TV Video Problem
26~42LH2000
32~47LH3000/LH4000
5/34
Making 
Revision 
2009. 2 . 1
 LCD TV
Symptom
Analog TV Video Problem
Check RF Cable
MAIN B’D L1201 = 5V ?
YES
 MAIN B’D L1202 = 3.3V ?
NO
Replace MAIN B’D IC809
YES
NO
Replace MAIN B’D IC808
MAIN B’D IC804
Pin #2 = 1.2V ?
Replace MAIN B’D IC804
YES
NO
YES
MAIN B’D R1210 Clock ?
NO
Replace MAIN B’D TU1200
26~42LH2000
32~47LH3000/LH4000
6/34
Check Signal format
Is it supported?
Check the SCART Cable
YES
MAIN B’D JK1100 Check
Replace MAIN B’D JK1100
YES
NO
Check MAIN B’D R1117
Video Signal ?
NO
YES
Check MAIN B’D C210
Video Signal ?
Replace
MAIN B’D C210
NO
Replace MAIN B’D IC 100
YES
Making 
Revision 
2009. 2 . 1
 LCD TV
Symptom
AV1(Scart CVBS) No Video
 Problem
26~42LH2000
32~47LH3000/LH4000
7/34
Check Signal format
Is it supported?
Check the SCART Cable
YES
Check MAIN B’D JK1100
Replace MAIN B’D JK1100
YES
NO
YES
Check MAIN B’D C200 (RED)
C201 (GREEN)
C202 (BLUE)
Video Signal ?
Replace
MAIN B’D C200, C201, C202
NO
Replace MAIN B’D IC 100
YES
Making 
Revision 
2009. 2 . 1
 LCD TV
Symptom
AV1(Scart RGB) No Video
Problem
26~42LH2000
32~47LH3000/LH4000
8/34
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