Still have my 31 year old beeb working. That said, the PSU has had a lot of work on it and there's a ton of heatsinks added, but it's stable for 1-2 hours before crashing.

Can't get disks or cassettes to load (still got all the Acornsoft and Superior stuff), but I plan on linking it up to something like a Pi and add a custom file system to be able to load stuff up again. Interested if anyone already has mananged this.