All the lights will light up when you push a button but it doesn't do anything to change channels, let me see use the guide button, nor the system info button too. This is a 4.0 IR/UHF PRO remote control for Dish Network... I currently have another tv.. tv2... hooked up to this box and the remote works perfectly for that one. What should I do to fix this?? Do I need to have a new remote to replace this one??

Televison & Video - Universal Remote Control - Dish Network IR/PVR Remote