My previous Roku Express, purchased 3 yrs ago, had an option directly beside the "Add Channels" box, at the very bottom of my channel lineup grid.
Just bought a new RE and am amazed to find this feature is no longer provided as an option.
How can this be restored? It's a small thing but I miss it regularly.
Settins/Home screen/Shortcuts>> TV Off toggle on.
Doesnt mean it will work though once its there.