Need more information.
Is this a separate Roku device, or a tv with Roku built in?
What is the Roku model and model number?
Does this happen on all inputs?
Without more to go on, this sounds like a television equipment problem to me. For that you need to go to the television manufacturer. Even for Roku TVs, Roku just supplies the operating system, the hardware is the manufacturer's responsibility.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking " Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X
