The remote code that works for the TCL Roku tv is 11756. I found this code on the TCL website and it works. None of the others on the remote code page or the ones offered by other Comcast customers worked.
Thank you !!! I got my TCL back in October 2016,then I got xfinity x1 and wasn’t able to connect to the codes given by them even after troubleshooting on line,thank you so much for sharing I can finally control it all with one remote *****