I went to get a glass of milk yesterday and before i even poured it, it seemed warm. After checking it out our fridge was about 55 degrees. I turned it to its coldest setting and in a few hours it was about 38 degrees. Later in the day it was back to about 55. We have a second fridge and freezer so we moved everything to it. Overnight it went down to 20 degrees. Any ideas? It's an older fridge but not really looking forward to spending 2K on a new one. Thanks for any suggestions on what to check.