I think I know the answer, but you all can confirm.
My $80 craigslist bought chest freezer has been operating for 5 years. Over the weekend, I lowered the temp from 42 to 39 for the summer, and it kicked on. Later that day, I noticed it was running and at 41. Later on, still 41 and still running. I opened hatch, found 1 inch thick frost 3 inches below top of unit (below bottom of collar). I set to 41, and frost disapated, but continued to run. Never did that before.
Other symptoms, the exterior used to get warm to touch when cooling....now the outside is only lukewarm in spots (near top where frost builds).
I set temp this morning to 50 to see if it can run and hold temp there (and perhaps thaw whatever problem it might be)...
is this a coolant blockage, compressor starting to (or has) fail(ed), or something fixable?
I am happy with the 5 year life for $80, but would fix if easy/cheap....but am considering paying more for new or newer next time....I have no plans on making it fancy. Your suggestions are welcome.