On my TCL Roku TV, if I briefly press the power button it displays a little menu with the inputs. I can then press it again to move to a different input. I don't know if the Sharp is the same, so hopefully someone else knows more about that brand if it doesn't work the same way.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.
