Welcome to the Community, and thank you for posting, it's great to see that Parrotperson has been able to speak to you, thanks Parrotperson
C133 can indicate a network issue on the TV services and as such I've been able to run my tests. I was able to see that the box is running well with no signs of any timeouts, signal levels are good and also you've been connecting well to the network.
I can understand that this is never great when it happens and that we're here to help, can you tell me if this is still persistent?
We have had an engineer out and the problem is now fixed and it was fixed before your reply, that is the reason it was showing ok, however we are still getting the odd picture pixels going weird still, this only usually happens when you have an external Aries, but the engineer said its to do with updates it's not an issue though, just thought I'd mention it.