When I turn on Full UHD on tv I lose sound to my receiver. I thought my Onkyo went out so I Purchased a new yamaha. Then checked all cables still had the problem. . I figured out it was the full UHD. the tv worked fine for many months in full UHD. Anyone have a fix or have had this problem? Cables are all 4 k cables. I have tried switching them out. This is only an issue with my Direct tv HR24