LG 42LB5800 - Page 49

A
. Video erro
r
Established
dt
Error
2014 1 2
Standard Repair Process
Vertical / Horizontal bar, residual image,
light spot, external device color error
d
a
t
e
Revised date
5/13
LCD TV
Error
symptom
Vertical/Horizontal bar, residual image, light spot
Replace
Module
2014
.
1
.
2
Screen
normal?
Y
Check external
device
connection
condition
Y
Check and
replace Link
Cable
Normal?
N
Screen
normal?
Replace Main B/D
(adjust VCOM)
Check color condition by input
-External Input
-Component
-AV
HDMI/DVI
N
Module
Screen
normal?
☞A8
☞ A10/ A11
☞ A28
N
N
Y
Replace
module
-
HDMI/DVI
End
Request repair
for external
device
☞A12
Y
Replace Main B/D
For LGD panel
End
Check Test pattern
For other panel
External device screen error-Color error
External
Input
error
Connect other external device
and cable
N
Rl
Screen
Check screen
condition by input
-External Input
-Component
Check S/W Version
N
Check
version
error
and
cable
(Check normal operation of
External Input, Component, AV
and HDMI/DVI by connecting Jig,
pattern Generator ,Set-top Box
etc.
Y
R
ep
l
ace
Main B/D
Screen
normal?
-AV
-HDMI/DVI
Request repair for
external device
Component/AV
error
HDMI/
Y
S/W Upgrade
HDMI/
DVI
Connect other external device
and cable
(Check normal operation of
External Input, Component, AV
and HDMI/DVI by connecting
Jig, pattern Generator ,Set-top
Bt
Replace
Main B/D
Screen
normal?
N
Y
Y
N
Normal
screen?
End
7/ 97
B
ox e
t
c.
End
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