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
PREV: LG 42SL90QD-CA (CHASSIS:LC91L) Service Manual

LG 42SL90QD-DA (CHASSIS:LT91L) Service Manual ▷ View online

Check Signal format
Is it supported?
Check the RGB Cable
YES
MAIN B’D JK405 Check
Replace MAIN B’D JK405
YES
NO
NO
YES
Check MAIN B’D C207 (Video)
R2030 (HSYNC)
R2031 (VSYNC)
Replace
MAIN B’D C207 or R2030 or R2031
NO
Replace MAIN B’D IC 100
YES
MAIN B’D JK405 Pin #2
Video signal ?
R446 has Vsync ?
R447 has Hsync ?
Making 
전자 - 6-2
Revision 
2009. 2 . 1
9/25
LCD TV
Symptom
RGB No Video Problem
Check Signal format
Is it supported?
Check the RGB Cable
YES
MAIN B’D JK405 Check
Replace MAIN B’D JK405
YES
NO
NO
YES
Check MAIN B’D C2016 (RED)
C2017 (GREEN)
C2018 (BLUE)
Video Signal ?
Replace
MAIN B’D C2016 or C2017 or C2018
NO
Replace MAIN B’D IC 100
YES
MAIN B’D JK405
Pin #3 (BLUE)
Pin #2 (GREEN)
Pin #1 (RED)
Video signal ?
Making 
전자 - 6-2
Revision 
2009. 2 . 1
10/25
LCD TV
Symptom
RGB No Color Problem
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace MAIN B’D IC 100
Check the ADJUST MENU
EDID OK ?
YES
Download EDID
(Refer to Adjustment Spec)
NO
NO
Replace
MAIN B’D IC601 (HDCP KEY)
Making 
전자 - 6-2
Revision 
2009. 2 . 1
11/25
LCD TV
Symptom
HDMI 1~4 All No Video Problem
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace MAIN B’D IC 100
MAIN B’D JACK Check
JK600 -> HDMI1
JK601 -> HDMI2
JK602 -> HDMI3
JK603 -> HDMI4
YES
Making 
전자 - 6-2
Revision 
2009. 2 . 1
12/25
LCD TV
Symptom
HDMI1 or 2 or 3 or 4 No Video 
Problem
Check MAIN B’D IC600
YES
Page of 69
Display

Click on the first or last page to see other 42SL90QD-DA (CHASSIS:LT91L) service manuals if exist.

RANDOM: