LG 47LA6130 (CHASSIS:LJ31B) Service Manual ▷ View online
A. Video error
Tuning fail, Picture broken/ Freezing
Y
N
☞
A5
Check RF Signal level
Normal
Signal?
Check
S/W Version
S/W Upgrade
SVC
Bulletin?
Normal
Picture?
Y
N
Y
Close
Check RF signal cable
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ Set-Top-Box, Different maker TV etc
☞
A6
Standard Repair Process
Established
date
Revised date
4/14
LCD TV
Error
symptom
2012. 01 .14
Contact with
signal distributor
or broadcaster
(Cable or Air)
Close
N
Check
Tuner soldering
Replace
Main B/D
Color
error?
Y
N
※ Check and
replace Link
Cable
(LVDS) and
contact
condition
Y
N
Replace Main B/D
Color
error?
Check error
color input
mode
Check color by input
-External Input
-COMPONENT
-RGB
-HDMI/DVI
Y
External device
/Cable
normal
External Input/
Component
error
Check
external
device and
cable
Y
External device
/Cable
normal
RGB/
HDMI/DVI
error
Check external
device and
cable
Replace Main B/D
Replace Main B/D
N
N
A. Video error
Color error
☞
A7
N
Y
End
Replace module
Request repair
for external
device/cable
Color
error?
Check Test pattern
☞
A10
☞
A8/ A9
Standard Repair Process
Established
date
Revised date
5/14
LCD TV
Error
symptom
2012. 01 .14
Screen
normal?
N
Y
Check external
device
connection
condition
Y
N
Check and
replace Link
Cable
Normal?
Y
Screen
normal?
Replace
module
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
☞
A10
External device screen error-Color error
External
Input
error
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
N
Y
Replace
Main B/D
Screen
normal?
Check screen
condition by input
-External Input
-Component
-RGB
-HDMI/DVI
Request repair for
external device
Component
error
RGB
error
HDMI/
DVI
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Replace
Main B/D
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Y
N
Replace Main B/D
Replace
Module
Screen
normal?
End
Established
date
Revised date
6/14
LCD TV
Error
symptom
Standard Repair Process
☞
A7
☞
A8/ A9
Check Test pattern
2012. 01 .14
N
B. Power error
No power
Power LED
On?
Y
N
DC Power on
by pressing Power Key
On Remote control
Y
N
Normal
operation?
Check Power
On ‘”High”
Check Power cord
was inserted properly
Check
Power LED
Replace
Power
B/D
Measure voltage of each output of Power B/D
N
Y
Normal
voltage?
Replace Main B/D
Y
OK?
Replace Main B/D
N
Y
Normal?
Check ST-BY 3.5V
Replace Power B/D
N
Y
Normal
voltage?
Replace Power
B/D
Y
☞
A11
☞
A12
☞
A13
☞
A4
Standard Repair Process
Established
date
Revised date
7/14
LCD TV
Error
symptom
. Stand-By: Red
※
Close
2012. 01 .14
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