Typically the micro switches fail before anything else. You can actually buy the exact Honeywell switches across the counter at Graingers and rebuilt the thing as long as the electronics work, which I bet they do.
I have a lot of those out in the field on pneumatic controls and I rebuilt them. It's relatively easy if you are working on a bench in comfort.
"The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
- Alexis de Toqueville, 1835