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LG OLED77B3 Series User Manual

LG OLED77B3 Series
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Established
date
Revised date
Error
symptom
A. Video error
1/16
Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio
Check Vx1 lock
voltage
0V
Y
N
Check Power
Board (Main)
20V, 12V etc.
Normal
voltage
Y
N
Replace Main Board
Repair Power
Board or parts
Check Power Board
(Module) 23V output
Normal
voltage
Y
Replace module
N
Repair Power
Board or parts
End
Always check & record S/W Version before
replacing the Main Board
Replace Main Board Re-enter White Balance value
Precaution
No video/ Normal audio
A9
A9
A4
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/DPower B/D, Vx1 Cable, Speaker Cable, IR B/D Cable,,,)
1
A1
Standard Repair Process
Copyright © 2023 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.

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LG OLED77B3 Series Specifications

General IconGeneral
BrandLG
ModelOLED77B3 Series
CategoryOLED TV
LanguageEnglish

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