Appears to be a faulty box. Waiting for someone to have a look and replace box Saturday. I called BT today about the problem and I must say it was a first-class service. They also picked up a problem with my BT router and sorted that out too!
Great service from start to finish. I hope the new box will be an end to all the issues we have had. Oddly, we lost the picture all day last week so something very wrong somewhere.
