Description:

Hoping somewhere has a known bad/nonfunctioning tps for the fb. I think some fc tpses are the same. From what I understand it needs to be narrow range - or something like that.

Specifically, I want a bad one as I plan to open it up and see how it works and if I can can make something similar.
Of course the other criteria is cheaper the better.
So, who wants to help with parts for a science experiment?