LG OLED55B7M Service Manual

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
-HDMI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
External device screen error-Color error
External
Input
error
Connect other external
device and cable
(Check normal operation of
External Input, HDMI/DVI
by connecting Jig, pattern
Generator ,Set-top Box etc.
N
Y
Replace
Main B/D /
Module
Screen
normal?
Check screen
condition by input
-External Input
-AV
-HDMI/DVI
Request repair for
external device
HDMI/
DVI
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Replace
Main B/D /
Module
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Y
N
Replace
Module
Screen
normal?
End
Established
date
Revised date
5/15
Error
symptom
Standard Repair Process
☞A6
☞ A7
5
☞A15
Check Test pattern
Replace Main B’D
for LGD Panel

LG OLED55B7M Specifications

General

Brand	LG
Model	OLED55B7M
Category	OLED TV
Language	English