Doug, excellent idea about connecting 120 directly to the heating element. Since the heat chamber heated up on both 120 and LP I assumed (probably a bad idea) that the heating portion was okay. All other indications seem to point toward a bad cooling unit. I'm not keen on the idea of spending a bunch of money to replace the cooling unit on an old fridge, so I ordered a new Norcold DE0061R compressor style fridge. Even though the old one did an adequate job I decided to go with a compressor type fridge. I have 400 watts of solar and a 170ah Renogy lithium battery so I should be okay.