On Sat, 03 Feb 2018 13:44:21 -0500, "(PeteCresswell)"
wrote:

Hotpoint 2.18 ft3 NoFrost CSX22G.

25-30 years old.

Stopped working some weeks ago, found solid ice behind freezer side back
wall, defrosted, and all was well....

I would suspect the door seals too. Also make sure the circulation fan
is running and the ports are clear. Don't stack things in front of the
louvers. Beyond that I agree I would not spend a lot of money on a
fridge that old.