Well I replaced the old overheating element with a new adjustable
one that has a boost timer which is a much better
idea.

I was curious as to where the stat was in to old element as it
just looked like a long road with an earth and two power
connections.

After a bit of hacksawing I extracted this which is, I presume, a
70C solid state stat of some sort.

https://photos.app.goo.gl/67pbhzeAExkhMa3i8
https://photos.app.goo.gl/suTh6zDybC5aLshz6

There's also a thermal fuse hidden under the shroud that I didn't
at first spot so I guess that would have provided major overheat
protection.

Oddly, the stat still seems to work although I haven't checked the
temperature it switches off at there's no doubt that the rail
was getting much much hotter than normal.

Is it common (or even possible) for these stats to lose their
"proper" switching temp?

Tim

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