LG M2250D Service Manual page 50

Standard Repair Process Detail Technical Manual
Error
Established
A. Video error_Video error, video lag/stop
symptom
date
LCD TV
Revised
TUNER input signal strength checking method
Content A6
date
<ALL MODELS>
MENU red key (customer support signal test
select channel
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
A6
ⓒ LG Electronics. Inc.2011