You mean do I get actual video CONTENT through the HDMI OUT, not just see the menus? If so, we always used this HDMI OUT when we were using this in a 1080p-compliant setup and got no problems; things seemed to change over time when I started using the port just to check the receiver settings through the new 4K TV.
As for the remote button -- I don't think this is the case because I can use the SETUP button (which opens up the OSD) to turn the feature on and off via the receiver's front panel display...so if the button was bad, it wouldn't allow me to even pull THAT up.
However -- I had been having issues with the factory remote of this unit no longer responding to some commands, such as volume up/down, and I ordered a generic replacement for it (because originals are no longer made). I suppose it IS possible the SETUP key is a bit wonky...but if this was the problem, why did the OSD menus begin to distort with green lines over time, until finally they wouldn't come up? What would this have to do with the remote button?