Freezer section warm at top, Fridge section warm

Unplugged fridge. Removed the lower panel inside freezer. Cut off wires to Bimetal Defrost Thermostat and used wire nuts to install new one. Too much bother to replace everything they gave with the thermostat. Two wirenuts are fine.

I first though the Fan was the problem, but read here about the thermostat. I think moisture gets into the thermostat and rusts the wires and pushes out on the cap causing falure. Someone could attempt to resolder some wires to it after removing the cap. Then re-seal.

As a temp repair you can wire nut the wires together. The only problem is when it goes into defrost mode it will circulate warm air, but it works until the new thermostat arrives.