Your project is better than mine. I am restoring a 1960s-vintage Bunn "Pour-OMatic" X-16 coffee maker. When I got it, it had a nice ground fault due to a bad power cord and was covered in enough dirt and grime to have its own garden. Now I am down to why the main heating element works but the water temperature is too low. I much rather shoot my test item than pour carafe after carafe of water into it.
The real fun part is no service manual or parts list, so everything has been reverse-engineered.