On Mon, 3 May 2021 13:30:17 +0100, ARW wrote:

On 03/05/2021 09:38, Jedzi wrote:

I've got an ancient, maybe 40 or 50 years old, switch for the immersion heater in my airing cupboard. It's a thin-ish one, mounted on the wooden door frame.

Increasingly, it gets hot in use and has started to smell slightly (I think it's a heated plastic type smell).

Usually like fish.

That's melamine (amine) and often indicates a loose connection.
High-temperature connector block (pale yellowish) is made of it.
--
Peter.
The gods will stay away
whilst religions hold sway