How can I fix the auto switch on my Rusell Hobbs K3 electric kettle?

My Rusell hobbs electric kettle (K3) auto switch does not work. I have to manually press the on-switch until the water boils. How can I repair this problem?
A. Sandoval, September 2019


done
Kettles are like irons: pretty much irrepairable and so cheap to replace, it isn't really worth it.

Hhfd, September 2019