Fridge doesn't work?? 1993 Winnebago Warrior

I just checked the volts between J3 and J4 (purple and green) and there is 12 volts!! It appears that these wires run into the back of the fridge. I pulled he eyebrow off the front of the fridge to see if there is any power on the circuit board. between R11 and R21 and it was about 10 volts. Seems like I have power going to the fridge (12 volt and 120 volt). Either there is a short in the 120 cord or the circuit board in the top of the fridge is bad?? I didn't know there was fuses under the black cover so I'll run out and check it right now!! Thank you for your help! we are getting close.