It seems to happen when the TV is recording something live but I am also watching the same program but at an earlier period in the live stream recording mode.
IE: Recording is halfway done but I then start watch from beginning and at 21:00 or there abouts it suddenly gets a technical error screen displayed for about a few minutes then corrects itself and carries on displaying the recorded film or program.
Should I try to switch off the box completely and then get it to restart?
Or is this a known fault with the transmission itself.