It was beeping before I changed the screen over in the old remote and the touch screen wasn't working at all. That is why I thought the screen had packed it in.

So I am guessing the board too has a fault.

I have now found out that another Pronto remote in the house is doing a very similar thing, everything is now pointing to me having to ditch it, but I don't know what to replace it all with whilst keeping the core of the setup, I.e. I don't want to have to spend heaps of money doing a major home entertainment change.