
Samsung UN55JS7000FXZA 4K Ultra HD LED Smart TV: This SUHD TV offers 4K picture quality — 4x the resolution of Full HD — and a wide variety of Web options via Smart Hub. Stream music and video and surf the Internet with the multitasking power of a quad-core processor. Plus, with Briefing on TV, you can sync this SUHD TV with a Samsung smartphone or tablet to display time, weather and schedule updates on the TV screen.

Q: What is the refresh rate for this tv? 120hz or 60hz?
A: Refresh rate on a 4K tv is always 1/2 the motion rate. So this tv has motion rate 120 so refresh rate is 60. A 1080p tv's motion rate is equal to its refresh rate...example, motion rate 120, refresh rate 120.
Q: HOOK UP
A: No HDMI cables. If you use Netflix, Amazon Prime, Hulu, or anything over Wi-Fi, you wouldn't need it. If you have a cable box, it should come with a cable. If you have a gaming console, it should come with a cable. If you have a device you want to use with the TV, that device should come with a cable.
A: I have this same problem. I returned the first tv that had this problem and now the second one has the same issue. I don't know if you have had it fixed or what you did. Anything you can tell me would be helpful. If you would be able to give me some advice on what I should do that would be great. Should I return it and exchange it for the exact same thing (which I've done once) or should I just buy a different 4K tv of another brand?
A: Cheaper one is a 6400 model. It's the 2014 model, so slightly older hardware, etc... Newer one has more hdmi ports, more internal storage (for apps), and it also has the "S" moniker. Which is an improved display technology. Something to do with Nano Crystal Tech
Q: how many hz?
A: 120
Q: whats is the difference between this tv and h un55hu 9000
A: Nano Crystals. See the difference between 16 million and 1.1 billion colors
Q: What is the best wireless kb w/touchpad for this model (JS7000)??
A: I have been using samsung keyboard model number VG - KBD 2500 from best buy for a month now. It's been working well with my samsung JS 7000 series.
Q: What's a smart hub verses a standard
A: the smart hub allows for apps like Netflix, Amazon, Hulu, etc. to sign in directly from your tv. you can also cast from phones and tablets directly to your tv via your wifi.