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