Welcome to the Roku Community, @Neiceymyers!
Thanks for reaching out. We'd be happy to help you determine the cause of this and find you the best resolution possible so you can get back on streaming.
Before proceeding it would be great if you could provide us with additional information such as follows:
- Does the line appear during playback only?
- Is this happening on a specific channel?
- Did your TV recently receive any software update prior to this happening that might have triggered this issue?
- A photo of it.
We'll be looking forward to your response!
Best regards,
Carly
Carly Y.
Roku Community Moderator