I have this exact same issue for the second time now. After arranging for an engineer to visit the last time I cancelled when it just resolved itself. Today I have the exact same thing again. Did you find a way of resolving it?
The box only shows white static. Nothing works. Turning it off and on again reveals the welcome page then eventually it goes back to what static. It’s the box as I have two v6 boxes and the other is working fine. Broadband, tv and phone all working fine. It’s not the input to the tv either as otherwise the welcome page would not show. I’m stumped. As I stated this happened before. I called customer services who tried to fob me off but I carried on until they agreed to send an engineer. However, after about 6 hours it returned to working normally so I cancelled them. This was a couple of months ago and now the same issue again.
The box only shows white static. Nothing works. Turning it off and on again reveals the welcome page then eventually it goes back to what static. It’s the box as I have two v6 boxes and the other is working fine
Possibly a video output issue, or at the very least that's something to eliminate.
Follow Home > Help & Settings > Settings > Devices > Video output (I'm quoting that from memory, I may be slightly wrong) and you'll have options to run an auto-test of the video output formats.
Worth a shot.
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