About 2 weeks ago I noticed my fridge was no longer cold, but the bottom drawer freezer was frozen solid. The display panel that has default settings of 4 for fridge and 4 for freezer was displaying nothing for fridge and a 67 for the freezer. This seemed to indicate something was wrong but the codes were not documented anywhere, so we flipped the breaker and it reset to the 4 and 4. Not convinced it was resolved I checked it and saw that the fridge was still not cold. I checked the freezer and the interior back panel had a frozen over with solid clear ice covering the air vents completely. We applied warm towels and removed all of the ice and the fridge returned to a cold temp.

Now two weeks later I keep hearing the fan running all of the time and there is frost building up on the back panel. I can hear fan(s) wind down and up when I open and close the door. This used to only happen on occassion and now it is constant.

I called LG and they say there is no problem, but based on what I find on the internet it appears this is a common issue. I have scheuled a repair person, but am not sure if I should just cut my losses.

1) Should I remove all food and let the inside ice thaw or attmpt to remove the covering on the freezer back to thaw the ice we presume is present around fan?
2) Is this problem repairable or a design flaw?
3) It is something we can DIY as it does not seem that the LG warrenty maybe worth the paper it is printed on?
4) If so how much is the part or parts?