A. Video error
Vertical / Horizontal bar, residual image,
Established
date
Revised date
5/16
LCD TV
Error
symptom
Standard Repair Process
2013.01.31
Vertical/Horizontal bar, residual image, light spot
light spot, external device color error
Replace
Module
Revised date
5/16
Screen
normal?
Y
Check external
device
connection
Y
Check and
replace Link
Cable
Normal?
N
Screen
normal?
Replace Main/T-con B/D
(adjust VCOM)
Check color condition by input
-External Input
-Component
HDMI
N
Module
Screen
normal?
☞
A6
☞
A7
N
condition
N
Cable
Y
(adjust VCOM)
Replace
module
-HDMI
End
Request repair
for external
☞
A8
Y
Replace Main B/D
For LGD panel
End
device
A8
External device screen error-Color error
Check Test pattern
For other panel
External
Input
error
Connect other external
device and cable
N
Replace
Screen
Check screen
condition by input
-External Input
-Component
-HDMI/DVI
Check S/W Version
N
Check
version
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Y
Replace
Main/T-con
B/D
normal?
Request repair for
Component
error
Y
S/W Upgrade
external device
HDMI/
DVI
Connect other external
device and cable
(Check normal operation of
E t
l I
t C
t
Replace
Main /T-con
Screen
normal?
N
Y
N
Normal
screen?
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Main /T-con
B/D
normal?
Y
End
5
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Summary of Contents for 55UB8500
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