LG LFXS28566 Series Technical Manual page 6

LG TECHNICAL BOOKLET
SVC Bulletins
MODEL
55LB**
55LY**
See bulletin
50UH5500
50UH5530
65UH5500
2019 LCD and OLED
with On-boarding
70UM69*
70UM73*
60UK60**
60UM71**
60UM72**
OLED55B6/65B6
OLED55B7/65B7
OLED55C7/65C7
17Y FHD/UHD
18Y FHD/UHD
65UH5500
• The information is intended for experienced Technicians, not for the Customer
• The information is subject to changes or updates without notice
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Copyright © 2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
SYMPTOMS
No backlight /
Abnormal display
White screen
No Power / IR LED flickering
(Red light)
On-boarding Main Board
replacement
No Display
White screen
Module Failure
Wi-Fi Network disconnect
No Signal / Line Defect
HE
HOW TO REPAIR
Replace with new LED Array
Remove ESD protection diode
Replace BLU assy if necessary
Connect USB in "Factory Mode"
Reattach SPCM EMI tape
Reattach SPCM EMI tape
Use changed OLED Module P/N
with included cable kit
Replace FFC cable
Replace with new Panel
(COV35805501)
SVC BULLETIN NO.
GLZ201800141-01
GLZ201900163-02
GLZ201900166-01
GLZ201900168-01
GLZ201900181-01
GLZ201900182-01
GLZ201900186-01
GLZ201900187-01
GLZ202000012-01