So, after some searching, I found the screw that assistantbrewer was talking about. I tightened it some, no change. i loosened it some, no change. So i loosened it some more, then some more, then the screw came out completely!
I can see the spring mechanism swinging freely inside the "box" or relay or whatever. I can't seem to get the screw to catch the spring and so can't get the screw to tighten again. It seems like the freezer will still run even with the internal temp at 30 F.
Am I totally screwed? Is there any way to fix this? If so, can I assume that loosening the screw is not the right direction (since it is completely out and the freezer is still running at 30 F)? Any advice would be appreciated.
Of note to others - be careful how much you loosen this screw - apparently it can come out!