Went to the site today. The Roku menu worked up until anything tried to play. Still got audio but purple screen and HDCP compliant problem.
Rebooted the Roku and all was well.........when in doubt, reboot!!!
I still replaced the HDMI cable, even though the current one was 4K UHD.
Funny though when jumping around between Netflix, Amazon, You Tube I saw a brief (one second) HDCP issue grey banner on a one 4K You Tube video but couldn't make it happen again??
One BIG question, on the Roku Premier+. What is the best resolution to leave it on in the display settings? I ended up leaving it on auto, even though from experience auto is not usually the best........any opinions??
Thanks for all of the input with this issue. It gave me a good idea what to expect when I arrived. This is a big help as an installer. This forum is great for us as clients don't know the weird shit we end up having to deal with. Arriving with a little knowledge can greatly reduce the time hunting for things we may think are wrong, which sometimes leads us up the wrong path!!