Are you talking about retuning your telly to get back channels due to switch over? If yes - I had this problem - the next morning I retuned and it was fine...Different area's have different times for the switch....after you have read this the signal will no doubt be strong enough for you to retune! If not visit one of these for help:
www.freeview.co.uk
www.digitaluk.co.uk
www.dtg.org.uk
fedup68
September 2011