Kenmore Refrigerator Not Cooling

My refrigerator has recently stopped cooling. Both the freezer and refrigerator. It cools a little bit, maybe down to 50 degrees in the freezer section. You can hear the compressor cycle on and off and the fan is working. I also unplugged it and let it set for over a day to make sure it wasnt frozen up anywhere.


I took the cover off the inside of the freezer and the copper cooling coil that comes from the back has frost on it up until the point that it joins with the aluminum coil that runs back and forth several times inside the freezer. The copper tubing is obviously cold but the aluminum tubing and fins on it aren't cold.


Thanks for any help.