I have a Pioneer VSX-LX102 receiver. It's connect to a Vizio TV via HDMI. I have had this set up for years, running Xfinity Cable box, PS4, Nintendo Switch thru the Pioneer.
I got rid of Xfinity and no using Roku. I have 2 other Rokus on 2 different AV receivers and have no problems. With this receiver I get no picture but i do hear some sound. Also the Vizio TV recognizes the Roku as it displays the name Roku on the top of the Screen.
I have tried the Roku thru each HDMI input on the receiver and it's the same on each. I can run it direct thru the Vizio but I don't want to do that. I also tried it on another TV setup and it works.
Any thoughts?