Common story: Freezer is cold, fridge is warm. However, the electronic temperature control for the refrigerator is not lit; the one for the freezer is lit. I'm certain that the Pwb needs replaced (part #AP4440479), but I can't access it to test or replace it. I have removed the 2 screws holding the control box assembly in place; however there appears to be two plastic posts that go up to who knows where, and they are preventing the removal of the assembly. Without removing the assembly, I don't see how to access the Pwb. The parts diagram does not show the plastic posts.

Thank you for any help you can give. I've been at this for about 5 hours!