Screen
normal?
N
Y
Check external
device
connection
condition
Y
N
Check and
replace Link
Cable
Normal?
Y
N
Screen
normal?
Replace Main B/D
Replace
module
Check color condition by input
-External Input
-Component
-
RGB
-
HDMI/DVI
Check Test mode
RGB screen
End
Vertical/Horizontal bar, residual image, light spot
Request
repair for
external
device
Established
date
Standard Repair Process
Revised date
LCD TV
A. Video error
Vertical/Horizontal bar, residual image,
light spot, external device color error
☞
A-4-1
Error
symptom
Use Picture Test
Color
error?
N
N
Replace Main B/D
Color
error?
Y
End
Y
Replace
module
P-5-1
Copyright
©
2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Summary of Contents for 55LV3730
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