[rohrmann]

On the outside, you will see a vent cover, like below and near the top of the vent cover will be a couple of square black fasteners with a slot on their heads. You can take a flat screwdriver or anything flat like that to turn the fastener a quarter turn, and then you remove the cover. Normally inside to your left, there will be a plug on the cord to the fridge plugged into an outlet. That is the source of 120 volt AC power. Sounds like you have a bigger problem than just the fridge.