LG 60LN57 Series Service Manual page 63

Standard Repair Process
Error
LCD TV
symptom
☞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
Color error
☞ A10/ A11
※ Check and
replace Link
Y
Color 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
23 / 88
2012. 12 .06
date
Y
Color
Replace module
error?
N
End
Y
Replace Main B/D
N
N
Y
Replace Main B/D
LGE Internal Use Only