I have had my Samsung fridge a little over 2 years and am experiencing the same problems many are reporting in this thread. It seems to go in waves of working, then I get the water leaking from the flapper, then the ice builds up on the bottom of the tray which I have to chip off. It has been a frustrating past 3-4 months dealing with this issue. I am really not interested in paying a tech to come to my house when I know the problem has not been resolved so that is throwing away money.
There is clearly a manufacturing defect with the ice maker assemblies, the fact that Samsung is not willing to stand by their products is a bit concernign given this is a wide spread commen issue.
I also have a Samsung gas range which thankfully I can report so far has been amazing, the fridge however I regret my purchase.
Hoping one day Samsung will step up and fix these problems