Solved Nobody is immune :)

Had the bed stop wanting to heat on the oldest of my printers.
The 'nose' test detected some fried electrons so I had to take a 1/2 hour and swap the RAMPS.

I swapped the stepper drivers with it so I didn't have to mess about with re-calibrating those.

Naturally one of the magnets felt unloved and popped off the bed while in there so that had to be re-glued.

Back up and printing.

(I even felt bad and cleaned the print bed).

It happens to everyone eventually. Spare parts are good.