You are giving the same fix that didn't work on that troublesome error message that suddenly appeared some months ago. It's not my TV. Everything was working right until evening one day and the next morning nothing worked okay. Typical Roku problem pattern. Trust me, my Sanyo TV has no way to change the display size. I went through the entire trouble-shooting menu. I am not getting a different TV. What I am getting is another streaming device if this isn't fixed soon. Since I can't hear as well as I used to, my TV is now useless unless I play a DVD. That works because it has no dependency on Roku.
You are being given a series of troubleshooting steps to determine the source/cause/fix for your issue; if you refuse to take them, that limits your ability to be helped.
Different problems may have similar or identical troubleshooting steps - that doesnt in any way mean they are the same problem, or have the same resolution.
You need to try the troubleshooting steps and you need to state your TV brand/model name/model # so you can get better help/assistance.