Actually... You may be right. The hole where the coolong plate connects to the thermostat may not be air tight anymore since he put in the new thermostat. Maybe he bunged up the seal somehow.
Thanks for the idea. I'll check that myself soon.
About temps: no idea. The thing is, I never measured the temperature inside it BEFORE it was fixed, so even if I measure it now I have no point of comparison :-/
Though... I just turned the temp from "min" to right in the middle and now it seems the ice is melting??? I'll give it a few more days and see what happens.
I guess it may be that this thermostat is backwards????
To be clear: i have to pass by "min" to go to off, so in my head it makes sense that "min" means "lowest cooling" / "highest temperature". From max I can't go to "off". These are all one dial with no separate on/off.

Hot honey is obviously from Sexy Bees