We're sorry to hear about the issue you're experiencing.
Have you tried contacting the TV manufacturer to inquire further? I'd suggest starting there to see what options or suggestions they can provide. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS.
For a list of Roku TV manufacturers' contact information, visit our Community post here: Contacting Support for Your Roku TV
All the best,
Roku Forum Moderator