LG 55LN5100 Service Manual page 107

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
<ALL MODELS>
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.
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Only for training and service purposes
Error
A. Video error_Video error, video lag/stop
TUNER checking part
Established
- 60/83 -
2012. 11 .30
date
Revised
date
A9
LGE Internal Use Only