LG 60LM6450 Service Manual page 61

Standard Repair Process Detail Technical Manual
Error
Established
A. Video error_Video error, video lag/stop
2010. 12 .14
symptom
date
LCD TV
Revised
TUNER input signal strength checking method
Content A6
date
<ALL MODELS>
MENU - Set up support - signal test
- select channel
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)