Forum Discussion
If the problem is pairing a remote(??), have you tried this?
https://support.roku.com/article/360011621473
For support, I like this forum. If you can’t find your question answered in any existing thread, then I suggest you create a thread with a title that summarizes the problem and a clear description of exactly what you are trying to do and where it goes wrong. Try to write it so that someone who isn’t there can clearly understand it.
Also, a little white space between paragraphs makes it easier to read. And the more people who read it, the more likely you’ll find someone who knows something.
There’s a part of your post about your TV, but I didn’t understand any specific problem about it. Unless you mean “TV is unaware of video source”, in which case, you would use the TV remote to make sure the TV is on the right input (the AVR), and the AVR remote to make sure the AVR is on the right input (the Roku).
If all the gizmos are HDMI-CEC-compliant (and not buggy) then you may be able to get something fancier going, but the manual way should work in all cases.
A player malfunctioning would be a warranty thing, or if its old, just buy another one, because I think these devices are too cheap to pay someone to repair them.