Over the last week or so I've notice that my pvr80 t810 has diplayed a blank message box after switching the box on.

I'm sure yesterday it was on FIVE but today is on ITV. There is a black box at the bottom of the screen with a thin white line all the way around. There is no text. I pressed the coloured buttons and once I pressed blue a purple loading message came up but nothing seemed to load.

Is this some issue with teletext on ITV?

Are you in an area about to go through one of stages of switchover?
A black box like that, but containing text, appears to advise you of the necessity of re-tuning. It is generated by digital text. Is your box receiving other text services ok?

In London, CP transmitter. Other text services are fine. No message is displayed just a blank box. After checking again today it seems to only appear on mux 2 channels.