Welcome, and thank you for posting here at the Roku Community, @Richis27.
We appreciate you reaching out regarding this matter.
Just to clarify, are you having this issue with a specific app or channel? If so, please let us know. Also, is your issue dealing with a black screen but still having the audio playing in the background? If so, may we know what troubleshooting procedure you have taken to try and resolve the issue you've been having?
The best course of action will be suggested once we have more information. We'll be anticipating your response!
Kind regards,
Carly
Carly Y.
Roku Community Moderator