Unit has been fine but suddenly has stuck on channel one. Neither the remote nor the unit buttons can change it, although the display changes. I cannot access the menu either, although again the display will say menu. Have switched off at unit and socket, have disconnected aerial lead, have removed batteries from remote: nothing changes
The unit only partially and erratically responded to the remote and unit buttons. I should have said that the input source and the connections were the first things I checked. However I switched on this morning, having left it off and the remote batteries out overnight, and it was still on BBC1, but then I realised that the unit was displaying BBC1 so I tried another channel and it was fine! All seems to be sorted. You obviously have the magic touch: remote electronic healing, very impressive.