I have a problem! the fridge cools fine, the freezer won't cool down below 18 degrees. There is ice on the inside back wall of the freezer. I took everything out to defrost it with a hair dryer on the fins. I've plugged it back it, and it is cooling down but the fins (coils) are already iced over after 30.min. ! What is wrong?
And how do I remove the inside back panel? I see the 4 screws but it still wont come out! Do I have to remove the bracket guides for all the selves as well? Help! The wife is getting upset!

Yes, a light snow is normal, compacted snow/ice is not. Take a look at the defrost heater at the bottom of the coils, if it is blackened inside the glass, you will need a new heater.

Yep, when it has that much ice on the coils, air cannot be pulled through the coils, therefore the temps start to rise. So in about 7 days, you will have the buildup of ice again on the coils and will have to defrost again. Take a look at the heater, better yet, do a continuity check and see if it is good or bad. The heater only get's hot when it defrosts, it is not hot all the time, about once a day it will defrost, if not mark down on the calendar about 7 days from now, you'll be defrosting it again.

Now my freezer has temps anywhere from 2* to 14* throughout the course of a day. and it's not because the freezer has been opened alot. Any ideas?