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LG 55EF9500-UA Service Manual page 57

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Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
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.
Copyright
2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
Error
A. Video error_Video error, video lag/stop
TUNER checking part
Established
date
Revised
date
A5
2014.12.31
A5
LGE Internal Use Only

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