I've had a Sony Bravia 4K TV for nearly two years now, when I got it I plugged in my Virgin TV V6 Box and everything has been working fine. I turned the box on yesterday and where in the past the box fired up instantly it took its time and in the end I just had sound but no picture. I tried other HDMI points but still no joy. I rebooted the box a number of times and eventually got a picture.
I turned the box off and this morning I have had the same problem. I tried my second box from upstairs on the TV and still the same problem, whilst tried the downstairs box upstairs and it worked fine. I looked online and saw that an iSolem box could be the answer, picked one up this morning but still no joy.
So at the moment I have got a picture and sound but I'm going to have to leave the V6 box on 24/7 to ensure I can use Virgin.
I have checked the TV and everything is up to date.
Just signed a new 18 month contract so hoping this is not going to be an ongoing problem.