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As long as you have a comcast cable box that supports an hdmi cable, this tv will work. Since this is a 4k TV, make sure to call comcast to provide you with a 4k cable box so that you can utilize the 4k. The same goes with the Dish receiver box. If they are old boxes, then its likely they wont display 4k. But they will still work as standard Hdtv resolutions which is 1k.
Sorry, there was a problem. Please try again later.Connect your Cable / Satellite box to the Fire TV Edition television using HDMI. To watch Fire TV Edition TV Help Videos, please visit: https://www.amazon.com/gp/help/customer/display.html?nodeId=202162190 David M. - Toshiba Support
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