I found a free ice machine that's almost perfect for my needs. It's the right size, doesn't make a lot of noise or heat, and it has no stinkin' control board or thermistors!
The thing is though, the evaporator thermostat fell off the evaporator, a common problem I guess. The unit works fine if I switch it manually between freeze and harvest. This article has a whole section on this issue.
I figure it's written for the DIYer when he now recommends using a bracket to wedge the thermostat bracket to the evaporator. That seems kind of cheesy to me. Soldering seems like the best option for somebody with the skill. Anybody have experience with this repair? What did you do? Solder, epoxy , or wedge it in?