Kenmore fridge warm/ freezer cold

I have had an issue with the freezer having ice build up for awhile now. Fridge was still cool. Now the freezer is cold and iced up and fridge is warm and things are spoiling. I defrosted the freezer for 3 days. Made sure all the ice was gone. Put back together because I took the back panel off in the freezer to expose the evaporator coil. Evaporator fan isn’t working. Ordered a new fan. Still not working. Any ideas or steps I can take to get it working or diagnosed ? Thanks Pete

Anyone have any suggestions ?

You have an LG refrigerator, hard to get info on this. Seems like you have a bad control board in this. I would order a new board in this site.