1-Touch Play is Roku's name for CEC (Consumer Electronics Control). It's not a complete implementation of the full functionality. It will only perform a handful of functions, and they don't always work between devices from different manufacturers.
Pressing the Home button on the Roku remote will do two possible things, all assuming the Roku is NOT what is being displayed on the TV. It will tell the TV to change the HDMI input to the one the Roku uses, and if there is an AVR in the HDMI chain the button press will also change the AVR input if necessary.
The only other CEC function that a Roku can perform is volume control. For a Roku remote with volume buttons, they can turn the volume up/down, either the TV or AVR, whichever is controlling the sound. If the remote has a power button, that will turn a TV off, but it uses IR to do it, not CEC.
I've had some occasional issues with 1-Touch Play, but it's difficult to know if it's a Roku issue or something else in the HDMI chain. Right now, it's working fine on all my Roku players that I've tested. Two connect through an AVR, while the rest are connected directly to a TV.
I suggest powering everything off, remove and reconnect any HDMI cables (both ends), then power everything back up. If the problem persists, it could be something with the TV. Any chance it received a firmware update recently?
Dan
Roku Community Streaming Expert
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