Denford Software & Machines

The above has failed. Only details I can see is the manufacturer Lambda, now TDK-Lambda I think. It is clearly just a 200v/24v switching power supply, but should I be looking for anything in particular amp wise. According to the wiring diagram it only supplies the ESR circuit.
In the meantime, any reason not to temporarily use an adjustable bench power supply?
Thanks.

Or, indeed, would anyone have the Denford spec for this?

Oops! 110/24v.
Connected bench power supply and the current shows 1 amp, so anything over 30w should be fine. Smallest available seems to be 60w and input ranging from 110-240v.