Color Error - LG 42LV3400 Service Manual

Standard Repair Process
Error
LCD TV
symptom
Check color by input
-External Input
-COMPONENT
-RGB
-HDMI/DVI
Check Test pattern
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Only for training and service purposes
A. Video error

Color error

※ Check
and replace
Y
Color Link Cable
error? (LVDS) and
contact
N
condition
Check error
color input
mode
External Input/
Component
error
RGB/
HDMI/DVI
error
Established
Revised date
Y
Color
Replace Main B/D
error?
N
Check
External device
external
/Cable
device and
normal
cable
Request repair
for external
device/cable
Check external External device
device and /Cable
cable normal
4
date
Y
Color
Replace module
error?
N
End
Y
Replace Main B/D
N
N
Y
Replace Main B/D
4/13
LGE Internal Use Only