Hi @Steph1966,
Welcome to the Roku Community!
We appreciate you for letting us know about the behavior you are seeing with your Roku device and we appreciate the troubleshooting steps you've done so far.
For more help and assistance with this type of issue, you'll need to get in touch with the manufacturer of your Roku TV. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS.
You can locate their support contact information here: Contacting Support for Your Roku TV - Roku Community
If there's anything else we can do to help, please let us know.
All the best,
Chel
Jecheal R.
Roku Community Moderator