Non High Def channels have poor reception
I just purchased a 73 inch Mitsubishi 1080p t.v. and the high def channels are perfect but the non high def channels like cbs, abc, fx etc are all pix elated and snowy. I have direct tv and I have the HDMI connection. I had a 60 inch sony projection tv with component inputs and the picture was great. What is the problem? I still watch a lot of non high def programs and the reception is really bad.