McMaster Carr will have it, large assortment of springs
Take compression measurements on your broken one to match the k value
I found many springs either usable directly, only needed to be cut down, or needed moderate but doable modification to work.
It’s my second place to look for springs
First place is my large assortment of springs from all the things I’ve taken apart over the years, I always break appliances down before recycling
Screws wire springs plastic shapes switches transformers are all kept in my garage stock for project tinkering
-s
