Strange problem just started. Sometimes the TV is starting up (from cold) with no sound. About 30 seconds later the green led in the front (left of red power one) starts flashing. In theory that means that there is a timer set up - but there isn't (and I don't use that facility anyway). I suspect that it is to indicate some sort of diagnostic detection that there is a problem. I unplugged all Scarts (to just leave antenna connection) and problem remains. Picture is fine (mute/unmute has no effect - but does show icon on screen as expected). From happening once or twice over last week ... it is happening now. I don't see a reference to this issue in the xxZD26 summary thread.