Hi, @marioeet1
Greetings, and welcome here in the Roku Community.
We appreciate you informing us about the troubleshooting you've done so far. We understand that you're having issues with your ONN Roku TV not turning on.
We would also like to suggest trying a different power outlet and see if it makes a difference.
If the issue persists, please get in touch with the manufacturer of your TV directly to report this problem and ask for more assistance. For its products running the Roku OS, each Roku TV manufacturer offers warranty services and direct support.
You can reach the ONN support team here: Onn Roku TV Support
Please keep us posted on what you find out.
Best wishes,
Kash
Takashi O.
Roku Community Moderator