I also have this issue but only after the tv has been turned off for a while such as overnight, or even for for a shorter period like 15mins. When I turn the tv on I can see all the menus but there's no sound or picture. The only way to get a picture is to turn box of & on a few times. It's getting a bit frustrating now, especially as if the box happens to be recording, this is lost as I have to turn it off.
Thank you for coming in and posting again, welcome back
I would love to help with the TiVo, when it stops working as it should it's not the greatest. I've been looking into your account and I can see that there is a slight issue on the TiVo and a bit more on the broadband side too. I would really like an engineer to come out and check everything over to bring this back online.
Can you take a look in your 'Inbox', I've sent you a 'Private Message', you can find this by clicking on the little purple envelope near the top right of the page.