LG Electronics 55LA790V/W/9-ZA Contents of LCD TV Standard Repair Process

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Contents of LCD TV Standard Repair Process
No. Error symptom (High category) Error symptom (Mid category) Page Remarks
1
A. Video error
No video/Normal audio 37
2 No video/No audio 38
3 Tuning fail, Picture broken/ Freezing 39, 40
4 Color error 41
5 Vertical/Horizontal bar, residual image, light
spot, external device color error 42
6
B. Power error
No power 43
7 Off when on, off while viewing, power auto
on/off 44
8
C. Audio error
No audio/Normal video 45
9 Wrecked audio/discontinuation/noise 46
10
D. Function error
Remote control & Local switch checking 47
11 External device recognition error 48
12 E. Noise Circuit noise, mechanical noise 49
13 F. Exterior error Exterior defect 50
14 G. Network error Exterior defect 51, 52
First of all, Check whether there is SVC Bulletin in GCSC System for these model.