I have now purchased a small digital Toshiba. This works fine except that I was initially missing approx 10 channels and the picture was freezing! The TV is on an extension aerial point although the main incoming aerial is taken into a signal amplifier. The xetension is fed from the amplifier. However, after changing the short aerial connection to the TV the freezing stoped and I am short of just 5 stations. Our main TV gives ALL the digital channels. Any ideas? what I need to do to get the missing 5 on the small TV?