Make sure that the coax cable is firmly connected to the STB and reboot said STB. Try viewing again.
If you're still having problems and service status listed no TV fault, plus ensuring the coax cable was firmly on didn't help. Then you can either wait until a member of the Forum Team here responds to your topic. The wait time for a response can be from a couple of days up to a couple of weeks.
Alternatively, ring 150 from a VM phone / 0345 454 1111 from any phone -> Option 1 -> Confirm your details when asked for them -> Option 2 (Faults.) -> Report a T.V. fault. If it needs to do an auto-mated test, let it. You'll either be able to then go on hold after or it will tell you to ring back in 10 minutes. Either way, once you'v gotten through to someone in the T.V. faults side ask them to look into it.
______ Any opinions expressed by myself are entirely my own and do not represent Virgin Media in any way.