By “Tv screen broken,” I’m guessing you mean that your RokuTV’s screen is broken. As was previously suggested by @renojim, you would need to contact the TV manufacturer. In addition, you could either get the set repaired, or replace it with a new set. What RokuTV brand do you own and when was your set manufactured?
I’m into videotapes and old electronics stuff, including extenders, converters and analog 4:3 TV sets (which are obsolete these days), and Miss Bianca is my favorite character in Disney’s The Rescuers (1977) and its sequel, The Rescuers Down Under (1990). I am not a Roku employee, only a user like you. ~ Jordan
Roku Express+ 3910X