Why does the remote not work

Check the remote control for its infra-red emission. Check it with fresh batteries. Check by pressing each button on it at a time; and see whether all of it generates infrared signal while pressing. If it is found OK, check and replace the infrared sensor inside the TV. If you wish to get some details; check the site linked here. It has details about how to check a remote control; by one among the post. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ If the remote control is found OK; check and replace the infra-red sensor inside the TV. Contact any service technician. There is one post regarding how to check a remote control. Search for it. Type in "How to test a remote control" in the search box, at the top left of the display window. It will make search easy.