I have a Samsung KS900 TV (2016) and a Samsung Sound bar HW-M6500 I cannot get them to connect via Arc whichever way I set it up it will not enable Arc on the sound bar it show's DIN and is then supposed to switch to TV Arc, I have Sky Q and have tried plugging this in to the sound bar and the HDMI Arc Sound bar to Arc (one connect box), but I still cannot enable ARC on the sound bar, I would be grateful for any suggestions as to what the problems may be, it is fine with Bluetooth but I cannot fathom why TV Arch wont enable on the Sound Bar.