LG 49SM5KD Service Manual page 14

Contents of Monitor Signage Standard Repair Process
No. Error symptom (High category)
1
2 A. Video error
3
4
B. Power error
5
6
C. Audio error
7
8
D. Function error
9
10 E. Noise
11 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
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
External device recognition error
Circuit noise, mechanical noise
Exterior defect
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