Thank you so much - I'm no longer in meltdown mode and order is restored to the universe. I actually ordered another from eBay last night (good condition and a very reasonable price), so I will have one in reserve. So I have the following in the house:

- the original TSU9400 that I bought when these things were actually on sale.
- a 9600 bought from eBay, presently set up for IR.
- a 9300 that came with the first RFX9400 that I bought - that's used for the kids' TV/stereo/PS4 combo.
- one 9800 used as main remote.
- one 9800 used as a static panel by the hifi and AV gear, and
- another 9800 on its way from Spain.

Could be considered excessive by some (including my wife)...

Thanks again. I appreciate your help more than I can say!

Cheers

Simon

(Oh, and cheers too, Mike. I had tried leaving it to completely flatten the batteries, but alas no joy. Clearly much of the memory is what used to be known as non-volatile when I was young.)