Let verify first if the remote is sending out signal, point the remote at your digital camera, you shoud see flashing light on your camera screen (camera can see infrared light) when any remote button is pushed, if you can see it, then the problem can be in the Infrared receiver in your TV and need further troubleshooting.

You can get new remote on EBAY.
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net