I assume you have changed the batteries to proven ones?. Is it completely dead ? I found the setup via the TV was not very intuitive and often thought nothing was working, but it turned out I had to use the arrows to move the highlight to what I wanted to action.
Try looking at the tip of the remote with a mobile phone to see if the IR is actually firing.
I am not aware of anything that can't be done through the TV, where are you stuck ?