I will give the best advice I can based onmy experience
yadayada posted an answer for this LG 42LK450 42 Class 1080P LCD TV, FuHD 1080p Resolution, ENERGY STAR Qualified, Picture Wizard II Easy Picture Calibration, Intelligent Sensor, Smart Energy Saving, ISFccc Ready 42LK450 42-LK450 42450 42-450 42450 42 LK450:
"Here is a link to the manual and other information, look it up. Product Support"
13,506,590 people helped