I'm in the UK and have a Samsung UE50NU7020, and going through it I have Virgin Media and a blu-ray player with 4K HDMI cables. I occasionally also have an iMac linked up to it with a Mini Display Port cable. I've had it just over two months and the choppy sound comes and goes. It started when I plugged in my mac so I didn't think much of it at first, but I now notice it on all devices that go through the HDMI ports. It doesn't happen on terrestrial TV or using any of the Smart features. Highly annoying, and I've tried all the methods listed in this thread, but nothing works permanently. Changing channels and back again works but then, after a while, it comes back. I've spoken to a Samsung representative on the phone and she said that, as it's over 28 days old, they won't replace it. Which is so frustrating as it's not something I really cared too much about at first until I noticed that the problem won't go away. It's comforting that I'm not alone, but it is highly infuriating that we don't seem to be getting anywhere. This may be the first and last time I buy a Samsung TV.
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