@SusanLewis1
On your Roku device, try disabling "Auto Power Savings" under Settings/System/Power/Auto-Power Savings/20-min inactivity.
Additionally, some smart TVs are configured to start on their own Home Screen rather than an HDMI. (You may need to browse the TV settings using the TV remote, not the Roku remote, and change the default startup screen to the Roku HDMI if that is your preference.)
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
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