Roger Hayter asked:

As a matter of interest, do power supplies like
their output switched on and off any better?

An excellent question! I've no idea: my information about frequently
switching the input on and off came secondhand from someone on a Unimat
group who has done the same motor-replacement as I'm preparing for: he found
the advice in the instructions which came with his PSU. Mine has no such
warning.

Bert