Apple tv

I've spent the better part of a day trying everything twenty times to get appletv to display on screen. Am using the component 2 input, Y/Cr-Pr?/Pb cables/jacks. Audio via analog to receiver.

I've tried Apple's advised solution - trying to adjust resolution, using the apple remote to request from the appletv unit. I hear these cute little bleeps (almost tivo-like) every minute or so - for about half an hour - but never see anything other than the bright blue screen.
Have unpluged, upgraded, restarted. Three times.


Everthing's snuggly plugged in - and using cables that work on the dvd player - and the same component input that worked for the dvd player.

Have the right input for viewing - any ideas - known problems?

Known solutions?

thanks

Cindy