I'm a newbie with a 1985 Toyota Dolphin. The frig works, but no matter what thermostat setting (1, 4 or Max) it gets down to about 12 degree F overnight. After reading, I tried disconnecting the thermistor from the fins in the rear, but get the same result. Does anyone have experience with these older Dometic refrigerators (non-electronic)? Does this sound like a bum thermostat? Anything else I should try before purchasing a thermostat? If it is thermostat, should I have a regular repair place do the work or is a reasonable DIY project?
Thanks.
Steve