LG OLED77C9PTA Service Manual page 24

Contents of Standard Repair Process
No. Error symptom (High category)
1
2
3
A. Video error
4
5
6
B. Power error
7
8
C. Audio error
9
10
11
D. Function error
12
13
14 E. Noise
15 F. Exterior error
First of all, Check whether there is SVC Bulletin in GSCS System for these model.
Error symptom (Mid category)
No video/Normal audio
No video/No audio
Picture broken/Freezing
Color error
Vertical/Horizontal bar, residual image,
light spot, external device color error
No power
Off when on, off while viewing,
power auto on/off
No audio/Normal video
Wrecked audio/discontinuation/noise
Remote control & Local switch checking
Magic Remote control operating checking
Wi-Fi operating checking
External device recognition error
Circuit noise, mechanical noise
Exterior defect
Page Remarks
1
2
3
4
5
6
7-9
10
11
12
13
14
15
16
17
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes