Well the spare psu didn't exist

but I had an old desktop pc that I used for my accounts that I could canabalise, proving it was the psu had failed. Ordered a replacement, which came this morning. Installed it without too much drama and now back up and running. Thanks for the link anyway Nigel. Quite like this Atr.

would have been useful if a manual had been included, but there's enough info out there now. Quick flight to Heathrow from Manchester, most things seem to work as they should. Can't knock it for the price. and I'm sure it will get the further attention the rivet counters demand. Trying to see how it can fit in our VA
