Customers who were experiencing this issue were able to resolve the issue by unplugging their TV for 10-15 minutes then plugging their TV back in. Try that to see if it resolves the issue you are seeing.
Re: Black screen on a onn roku tv that hasnt been dropped
My Sharp Roku TV is booting over and over and showing the sharp logo and rebooting. Sharp said call Roku, gave me a phone number with a recording that said Roku doesn't do phone support... any help here?>
However, as this may be related to a hardware issue, we would recommend contacting Sharp support to see what options or suggestions they can provide. Each Roku TV manufacturer provides direct support for their products running the Roku OS.
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.