Really sorry to hear you're having trouble with your TiVo®.
I've run diagnostics on your equipment and I can see an issue with your Input signal levels that will need to be adjusted by a technician. I've sent you a private message (purple envelope at the top right of your screen) so I can arrange an appointment.
Tech fan? Have you read our Digital life blog yet? Check it out
We too have been having the same problem, freezing pictures on live TV and recordings, for the past 10 weeks. We have had 4 engineer visits now, had TIVO box replaced once, and after every visit engineer says issue fixed. But always a few days later, issue returns with pictures pixalating and freezing.
We are due to have YET another visit tomorrow, and we have asked for a senior engineer, as we are totally fed up with not being able to watch programmes and we are paying a high premium for this TV Service, & for the inconvenience of waiting in for the engineer, and I can't count the endless number of hours speaking on the phone to Virgin to resolve the issue.
It seems to be a very common issue looking at the number of comments on the forum.