Product review (5 stars): super easy to replace and way less expensive here than ...
Whirlpool Gold fridge would randomly get warm while freezer bottom would get very cold.  Finally figured out the defrost cycle wasn't taking place. The board was the problem.  super easy to replace and way less expensive here than other places.  I'm repairing my old board since it is all analog electronics so I can have it ready to go when this one fails.