Yroc-
Glad it worked for you, but it was really a lucky stab in the dark.
What Roku calls "1-touch play" implements one of the features in the industry's CEC (Consumer Electronic Control) protocol over HDMI connections.
This works as intended on both of the TVs to which I have Rokus connected. All I need to do is press a key on the Roku remote and the TV automatically switches to the correct HDMI port to display the Roku, first turning the TV on if necessary. (It doesn't actually turn on a TV that has totally powered down - the TV must be in a "quick start" standby state that monitors the ports.) Similarly, pressing a button on my connected DirecTV receiver's remote will switch the TV to that HDMI port. I find this to be a great convenience.
Since I don't have cable or a live antenna hooked up to the TV, all my viewing is via Roku or Directv. I seldom need to use the TV's remote at all since both my Roku and Directv remotes can control the TV's power and audio volume directly.
Pressing keys on the remotes of neither of my TV's switches the TV to a different input, except of course for those those keys that are for direct source control.
If your TV remote keys other than source/input keys switch to the Roku's port, that sounds very unusual. What make and model TV is it?
When you exit the Roku, do you return to the Roku home screen first to stop it from streaming anything? Neither of my sets does this but perhaps your TV is sensing activity on the Roku's HDMI port other than a CEC command signal and switching automatically? Have you checked your TV's manual for information on this?
