Problem with non-HD chanells on new Pioneer PDP-5070 with DirecTv HD
 

I just exchanged my Samsung 5053 for a Pioneer PDP-5070 hooked up to a
DirecTv HR-20 HD DVR. Using the same setup & same HDMI cable connected
to the DirecTV box I am having video performance problems with all
non-HD channels. All of the HD channels come in perfectly, as soon as
I switch to a non-HD channel, the picture is horrible. The Samsung had
no problems with non-HD channels.

Is this a simple setting or a defective TV??

Any helpful comments appreciated!