Anyone have any bright ideas for a digital tuner that's not working? We've just had 'switchover'so never used the digital tuner before but the tv is out of warranty and won't pick up the digital signal. I've tested the aerial and cable on another tv and it works fine so it's a tv problem. It's a Sony Bravia KDL - lovely telly but not much use at the mo. I'm trying to find a way to restore factory defaults but all the codes I've found so far don't work!