Hi @aharimin,
Welcome to the Roku Community!
I noticed in your post that your Roku TV is just showing a black screen. I appreciate the troubleshooting steps you have tried to fix the issue.
I highly suggest you try contacting your TV manufacturer on this Roku TV. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS. Kindly visit our Support article FAQ to help you find the contact of your TV manufacturer: Contacting Support for Your Roku TV
Please let me know if there is anything else I can assist you with.
Regards,
Riamie
Riamie D.
Roku Community Moderator