Last night I was experimenting with different settings on my NEC 42VP4D and Panasonic xp30. I changed the xp30 to interlaced 480i mode, and now I am unable to change it back to progressive 480p mode. I make the appropriate change in the xp30 menu and *nothing* happens. No prog out shows on the LED and the NEC confirms 480i source information. Any ideas on what's wrong here?