LG 86SJ9570 Service Manual page 22

Contents of Standard Repair Process
No. Error symptom (High category)
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2
3
A. Video error
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5
6
B. Power error
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8
C. Audio error
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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
MR15RA operating checking
Wifi operating checking
External device recognition error
Circuit noise, mechanical noise
Exterior defect
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