Hello! @Robbinstaye,
We're thrilled to have you with us here in the Roku Community!
Thank you for reaching out to us. We're pleased to assist.
It looks like it will require some assistance from our friends at Onn to help diagnose your TV hardware. In the event of hardware failure, they will provide you with the option you have.
You can reach their support options at 844-334-2355, 9 a.m.–9 p.m. EST (excluding holidays), or by email at customerservice@onntvsupport.com.
Best regards,
Arjiemar
Arjiemar
Roku Community Moderator