A:Answer Yes. I have the TCL 75" Series 4 (I believe, not 6), and I have it working. I believe I had to initially run the video out to a regular input on the TV so I could see the menu, and then later I had to plug it back into the ARC. But, I was just learning, so your sequence of configuration might be different. I don't remember the exact order, but I can confirm it does work. I use it everyday, and I control the volume of the entire system from the included Roku remote. I turn the TV up, the receiver goes up. I turn off and on the TV, the Onkyo goes on and off.