So, not ready to give up on my Tivo yet, but the remote has been playing up.

 

The Down button and the Tivo button both require double tap to work. The red LED on the remote lights up even on a single tap, but the yellow receiver LED doesn't, and the Tivo doesn't respond. The response only happens when I double tap these buttons.

 

Strangely enough, all other keys work just fine. Anyone else has had this problem?