Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
@monty3, instead of questioning the knowledge of other people why don't you tell us what you're trying to do? Do you have a Roku TV and not a Roku player connected to a TV? If so, did you add channels 3 and 4 when you scanned for antenna channels? Your attitude is quite off-putting.
Roku Community Streaming Expert
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I am having the same issue. My cable box worked great for 2 years and then the Roku Tv stopped recognizing the cable box. I swapped the cable box for a new one and it still says no signal. I also put on a brand new hdmi cable and still the same. I have reset all the settings back to the factory settings and still I get the red screen saying no signal. Help please.
@Kellybeck I am going to assume that you have a cable box capable of HD. If that is the case using a coaxial cable and using channel 3 or 4 will not support HD and you picture quality will suffer greatly. Check your settings on your cable box to see if it can be set to output over HDMI. Since you stated you tried a new cable, do you have another device you can use to check the HDMI port on your TV. It would be better going forward if you can get the HDMI input to work.
Have you tried checking the cable connection of the cable box as well as plugging the box to another HDMI port to see if that resolves the issue you are experiencing?
Please keep us posted on what you find out and we can continue to assist you.
