Hello, first time posting here. Noticed fridge portion was slightly warmer than usual, then ice maker stopped making ice. Fridge fluctuates between 40 - 50 degrees. I found some steps for a different model fridge to enter diagnostic mode and ran test for the ice maker fan and it does come on. Cannot tell what some of the other test are. Fins are not dusty, replaced damper in ice maker, condenser fan is running.

Is there anyway to narrow down what the issue could be, before throwing money at the controller board or any other parts?

Thank you.