LG 42LB5800 - Page 64

A. Video error Video error, video lag/stop
Established
Error
t
2014 1 6
Standard Repair Process Detail Technical Manual
TUNER checking part
A.
Video
error
_
Video
error,
video
lag/stop
<ALL MODELS>
A9
date
Revised
date
symp
t
om
Content
LCD TV
2014
.
1
.
6
Checking method:
1. Check the si
g
nal stren
g
th or check whether the screen is normal when the external device is connected.
22 / 97
gg
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.( with Main to Power Cable, Speaker Cable and LVDS or EPI Cable)
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