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Make sure the green wire didn't get mixed up with the blue wire. You can actually disconnect both the red and blue wires, and as long as green is OK, you will get a black and white picture.
You can alos test the component input on the Panasonic by plugging a cable into the composite video out put of the player (the yellow jack) to the green input of the Panasonic, and you should get a grainy black and white picture.
Try that, let me know if you have other questions, and thanks for using JustAnswer!
No, the interlace or progressive setting shouldn't matter.
Try connecting one end of one wire (doesn't matter waht color) to the yellow jack on the player, and the other end to the green input, does that give you black and white?
You're sure the DVD player works?
Connect that wire from the yellow jack of the DVD to a yellow jack on the Panasonic, select that input on the Panasonic, just to make absolutely sure the DVD player isn't broken.
You say it's still black even with using the yellow composite video?
Can you get any light at all out of the Panasonic? If you press the Panasonic's Menu button, does the menu come on screen?
The DVD player is not incompatible with the Panasonic, it just sounds like the Panasonic is broken.