Hi @Tech-Dummy,
Thanks for posting in the Roku Community!
We understand that you lost the control settings of your television when you tried to set up the Roku Ultra. No worries, we would be more than willing to provide you with further details.
When you are using the Roku program on your Samsung TV, you can easily navigate back from the TV control settings by using your Samsung TV remote. Simply press the "Input" or "Source" button on your TV remote to return to the previous screen of your Samsung TV settings.
We hope you find this information helpful.
Regards,
Riamie
Riamie D.
Roku Community Moderator