LG 37LV470S Service Manual page 46

Standard Repair Process
LCD TV
☞A8
Check color by input
-External Input
-COMPONENT
-RGB
-HDMI/DVI
☞A12
Check Test pattern
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Only for training and service purposes
A. Video error
Error
symptom
☞ A10/ A11
※ 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
Color error
Y
Color
Replace Main B/D
error?
N
Check external
device and
cable
Request repair
Check external
device and
cable
5
Established
2010. 12 .14
date
Revised date
Y
Color
Replace module
error?
N
End
External
Y
device/Cable Replace Main B/D
normal
N
for external
device/cable
N
Y
External
Replace Main B/D
device/Cable
normal
5/14
LGE Internal Use Only