Door ajar/lights/ice not working properly

I have a whirlpool fridge model Wrx988sibm03 that isn’t working properly. The ice maker works then doesn’t, the door ajar alarm goes off even when the doors are shut and the led lights sometimes don’t come on when the doors are open. I assumed it was the door switches and replaced them all. That solved the issue for about a day, probably just from being unplugged, but we are having the same issues again. Before I order a replacement board for $300 any other suggestions.