I set progressive scan on

Once you set progressive on the video is only output on the the component video out. To turn it off press dvd, press setup (setup will display on the front panel. Press down (ch) once, press right once, press down twice, press right once, press down once, press enter.
This should bring it back. Of course it's much easier if you have a TV with component input that you can hook it to so you can see the menu.
Mike