Color Error - LG 42LB550A Service Manual

Standard Repair Process
Error
LCD TV
symptom
A7
Check color by input
-AV
-COMPONENT
-HDMI
A10
Check Test pattern
A. Video error

Color error

A8/ A9
Check and
replace Link
Y
Cable
Color
error? (LVDS) and
contact
N
condition
Check error color
input mode
AV/
Component
error
HDMI
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
2013. 01. 24
date
Y
Color
Replace module
error?
N
End
Y
Replace Main B/D
N
N
Y
Replace Main B/D
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