First I tilted the fridge to access and clean the coils which are located along the bottom of the unit. After a good cleaning the fridge still wasn't cooling at all. It would turn on for a bit and then there was a clicking sound every few minutes. It was the compressor shutting off. I did some research and the most likely problem was the start relay on the compressor went bad. So I ordered a new one from here. It arrived very quickly which was a nice surprise. I disconnected the old one and put the new one in. Everything is working great now!