Why do I have green static on my tv when playing a dvd?

When playing the wii OR the dvd player through my tv, I have sound but no picture?

• I have a samsung flat screen. I have a sony receiver, dvd player, wii and cable box. When playing the wii OR the dvd player, I have sound but no picture. When watching regular tv, everything is fine. The wii is hooked up with the supplied cables into the video 1 slot on the back of the receiver. The wires are hooked up correctly. Sound but no picture when playing the wii. The dvd player is hooked up with :from the dvd player yellow video to the dvd video slot on the back of the receiver (switched out that cable in case it was a bad cable, but still didn't work). Also the dvd player is hooked up with the dvd orange bitstream/pcm digital to the digital dvd/ld in coaxial slot on the back of the receiver. I have a harmony remote that changes all the settings automatically depending on which device i choose to use. The way it is hooked up is that with wither the wii or the dvd player, the tv is switched to av1. with the dvd player, the receiver is switched to dvd. with the wii, the receiver is switched to video 1. I scrolled through all the inputs (manually) on the tv, but i cannot get the picture when playing the dvd or wii. What could the problem possibly be? Please help!!!

• Answer:

  You have the video part of the Wii AV cable hooked up to the wrong set of connections on the TV.