This does not work. We have to turn on the soundbar first, then the TCL
Roku TV, or we get no sound at all. Turning off the TV does turn off the
soundbar, at least for now. The software appears wonky, I wish TCL would
update this. I think the thread ...
No, it is not working. The last thing we did was put the soundbar back
on HDMI arc. It worked for about 4 days. Then it stopped working unless
we turned the TV/soundbar off and back on. This is, obviously, quite a
bit less than expected performance. ...
We have a TCL Roku TV also. CEC intermittently fails. We did complete
resets, power cycles, etc. and it fixed it . . . for a time. Now out
again. CEC does not "see" the soundbar that is connected. We use HDMI
and optical connection, as ARC also works...