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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
☞
A8
N
Y
End
Replace module
Request repair
for external
device/cable
Color
error?
Check Test pattern
☞
A12
☞
A10/ A11
Standard Repair Process
Established
date
Revised date
LCD TV
Error
symptom
2012. 12 .06
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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Summary of Contents for 42LN57 Series
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