From the above experiences,it seems that the boxes switch on automatically during the early hours,I guess this is to download the channel guide and new software?
The one I had trouble with was random though!
The Mx seems to respond to a play signal or noise via the Scart cable (pin 8)I wonder if setting the tv input as decoder makes this more likely?
Certainly disabling Scart control in the digibox menu (if poss)would be good,or praps try another input mode for the telly?
Regards,
Nick