LG 49LB55 Series Service Manual page 65

Standard Repair Process
Error
LCD TV
symptom
☞A7
Check color by input
-External Input
-COMPONENT
-RGB
-HDMI/DVI
☞A10
Check Test pattern
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A. Video error
Color error
☞ A8/ A9
※ Check and
replace Link
Y
Color Cable
error (LVDS) and
contact
N
condition
Check error
color input
mode
External
Input/Co
mponent
error
HDMI
error
Established
date
Revised date
Y
Color
Replace Main B/D
error
N
Check
External
external
device/Cable
device and
Normal
cable
Request
repair for external
device/cable
External
Check external
device/Cable
device and
Normal
cable
2012. 01 .14
Y
Color
Replace module
error
N
End
Y
Replace Main B/D
N
N
Y
Replace Main B/D
5/14
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