Welcome and thank you for posting here in the Roku Community, @MynKym!
We appreciate you informing us about this. We'll help you contact the right support for this.
This seems like a hardware issue, and it would be highly recommended that you directly coordinate this with your TV manufacturer, as Roku only supports its running software operating system. They could help you fix your TV screen.
You may reach them here: Element Support
We hope this will be sorted out soon.
Best regards,
Carly
Carly Y.
Roku Community Moderator