Hi, thank you for contacting JustAnswer.com. My name is Russell. (I'm a real person... I like to think so.) I will do my best to provide the right answer to your question.
I am looking up your system's details, please have patience just a moment....
Do you have a YVMxxx error indication in your YouView box's error code?
If so, please tell me what the three numbers ('xxx') in the error code are.
(It might be YVM5008, but I have to ask, please.)
I would advise you to scan for channels.
You're welcome, goodbye. (I will respond if you post again.)