Hello all, thanks for the speedy answers.
I checked the AC input and it is correct. I also used my oscilloscope to see if it was good. Further, I switched the AC supply to the another one and the fridge still does not switch to AC cooling.
On the board level, I checked that the board is indeed receiving AC supply. All good there.
The Board is also receiving the right amount of voltage. I checked it for all the circuits that carry 12V.
All the fuses have been checked and they all show a close circuit.
The AC heating element reads 44 ohms when unplugged from the the board.
The only thing I have not checked is to directly plug the heating element to AC and see if it warms up. Since the heating element tested 44 ohms, I considered it good.
I am not specialist in Dometic fridges but I do repair and test my circuit boards of my scientific equipment. So, I am not totally ignorant about circuit boards.
Cost of the board was $35 bucks, heating element is another $35 bucks. To me, it does not seem that it is very expensive compared to having the dometic guy come over. Plus Amazon gets all the parts back with no questions asked.
