GE Freezer/ Fridge not cooling - clicking noise

I noticed a clicking noise that started about two days ago. Kept my eye on it and it lost all cold… I took the back panel off and saw that the fan was not kicking on. I’ve seen on YouTube that it may be the start relay and the overload but my clicking noise is more frequent than the videos that are about a minute apart, mine clicks about every 5 seconds.
How do I diagnose? How do I know its not the Mother Board?