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 the SPDIF Cable
YES
Check MAIN B’D R230
PWM Signal ?
Replace MAIN B’D IC 100
Speaker Audio OK
YES
Check MAIN B’D JK403
Replace MAIN B’D JK403
NO
YES
NO
Check the Trouble Shooting Guide
Related to Audio Problem
NO
Making 
Revision 
2009. 2 . 1
30/34
 LCD TV
Symptom
SPDIF No Audio Problem
26~42LH2000
32~47LH3000/LH4000
Check MAIN B’D
JK405 Pin #1 5V ?
NO
Check MAIN B’D
R848 12V ?
Check that the USB Memory & HDD are supported by Spec
(Refer to User Manual’s USB cautions)
YES
Check MAIN B’D
R801 5V ?
Replace MAIN B’D IC402
YES
NO
Replace MAIN B’D IC808
YES
YES
Replace MAIN B’D IC 100
Check MAIN B’D
JK405 OK ?
YES
NO
Replace MAIN B’D JK405
Making 
Revision 
2009. 2 . 1
31/34
 LCD TV
Symptom
USB No Connect Problem
32~47LH4000
Check IR B’D P1 Wafer
& Connector
Check MAIN B’D P1304
Wafer & Connector
YES
NO
Replace it
YES
Replace IR B’D
Making 
Revision 
2009. 2 . 1
32/34
 LCD TV
Symptom
Remote Control Problem
26~42LH2000
32~47LH3000/LH4000
Check IR B’D P1 Wafer
& Connector
Check MAIN B’D P1305
Wafer & Connector
YES
NO
Replace MAIN B’D IC100
IR B’D IC1 Pin #3
Voltage 4V 
 ?
NO
NO
Replace it
YES
Replace IR B’D IC1
NO
Replace MAIN B’D IC100
Making 
Revision 
2009. 2 . 1
33/34
 LCD TV
Symptom
Remote Control Problem
19~22LH2000
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