Thanks guys.

I rewired the house completely four years ago, and I have rechecked varuous terminals etc in the hopes I might find an easy cure [Linked Image] No such luck.

I would use 'low-energy' lamps - but I hate the colour-rendering as well as the appearance.

I suspect I need to set up the V-logger and see what goes on, then perhaps look at cleaning up the supply. Fortunately, if this is the case, the PC is as yet unaffected [Linked Image]...now there's a small miracle!

Cheers again.

If hindsight were foresight, we'd all be millionaires!