Tuner Checking Part - LG 42LB5800 Service Manual

Standard Repair Process Detail Technical Manual
symptom
LCD TV
<ALL MODELS>
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected. g g
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)
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
A. Video error_Video error, video lag/stop A. Video error Video error, video lag/stop
t

TUNER checking part

Content
Established
date
Revised
date
22 / 97
2014. 1 .6 2014 1 6
A9
LGE Internal Use Only