Thanks for the response.
Have you tried the suggested steps provided on the link above for No picture on your TV and see if it helps clear the issue you are experiencing? To clarify, are you seeing a Red Light Solid in front of your device or a Red Light Flashing?
The FLASH RED shows when your device has insufficient power, the RED LIGHT IS SOLID (not flashing) your device is overheating. Be careful! The unit may be hot. Unplug and remove your device immediately and refer to: go.roku.com/tempcheck.
Keep us posted on what you find out. And kindly, include the serial number of your Roku device so we can look into this further. It can be found printed on the bottom or back of the device.