One of my projects this summer was my refrigerator. It does not work on 12 volts and poorly on 110 volts. The gasket on the door was a mess so I pulled the unit out and brought it home to work on. Fixed the seal and then ran tests with the door taped tightly shut and put a thermometer inside. Set temp control knob to 4 and let it run for a couple hours. It did cycle but was on the majority of the time. Inside temp was 52 degrees. If it was a car I would give it a shot of freon or R134A and move on. These are a sealed systems and from talking to various sources they can be opened and recharged but the all said they had poor results. As you know these little suckers are not cheap. Would not mind spending the money but I always have a cooler anyway so the refrigerator is really not needed. I am considering an inverter anyway so I might buy a $100.00 mini fridge from Menards and remove the cooling system and install in this one. I prefer to keep things factory when I can but conflicted. I was just wondering how everyone else has dealt with this issue or any other ideas. I have a 1988 26 PC with a Norcold unit. Thanks for your input.