A warm welcome here at the Roku Community, @Clintmax!
We appreciate you for raising your concern with us. Rest assured that we will find you the best resolution possible.
May we first know when did this issue occur? In addition, what troubleshooting steps have you taken to try and resolve the issue? Furthermore, we highly recommend checking for the latest OS updates on your TV by navigating to your Home screen. Scroll up or down to select Settings > System > System update > Check Now.
It may be possible that this is one of the reasons why your TV keeps crashing or restarting on its own. Keep us updated on how it goes! We'll be anticipating your response.
Kind regards,
Carly
Carly Y.
Roku Community Moderator