On 14/11/2020 22:23, Roger Hayter wrote:


The only thing I can think of is an inductive load causing the contacts to arc
and fuse. The monitors aren't ancient very large CRT ones I suppose?


No, new Samsung ones.

I mean, the weird thing is that some of the faulty switches have come
alright once they're removed from the panel. But I have to throw them
away, obviously. I have one in my hands now. It doesn't seem to be
caused by stress on the 1/4" connectors.

Bill