A couple followup questions.
I emptied the refrigerator and the freezer. Both doors have been open 2-3 hours. I took a hair dryer and melted any remaining visible ice in the freezer air vents at the bottom of the back wall.
I do hear noise so I am assuming the fan is running.
Do you still think I should remove everything for overnight? I'm thinking just leave it alone till morning and see what's happening?
I have a refrigerator thermometer. What temps should I see?
Assuming none of the above works, how much trouble is it to remove the freezer back wall with the ice maker? I'm thinking if I get to that point, I'd need parts, etc. and probably call for service.