Fridge all of a sudden would not get cold even with it set on coldest. Then the freezer was not freezing and basically turned into the fridge. The ice that had been there started melting. Took off back of freezer wall and the entire thing was frozen solid with ice. I melted the ice with a blow dryer and magically the fridge was cold again and the freezer was freezing again. However this only lasted a few days and it started doing the same old stuff. I would greatly appreciate the help as I do not have the money right now to pay someone to fix it.

when i locate them, how do i check to see if they work? i do not know much about fridge's but is it not the defrost heater? how can i check to see f that could be the problem?