Contents Of Lcd Tv Standard Repair Process - LG 55LA7400 Service Manual

Contents of LCD TV 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
D. Function error
11
12 E. Noise
13 F. Exterior error
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
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Only for training and service purposes
Error symptom (Mid category)
No video/Normal audio
No video/No audio
Video error, video lag/stop, fail tunning
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
No response in remote controller, key error,
recording error, memory error
External device recognition error
Circuit noise, mechanical noise
Exterior defect
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Page Remarks
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LGE Internal Use Only