Ok I have a xnox 360 and when i plug the color coded cables into the color coded tv inputs i turn the channal to video 2 and i hear sound but i could not see anything? sooo what do i do?

Are you using AV or component cables?

*Solution for AV Cable*
Check to make sure the cable is fully plugged into the port. Having it even just slightly out of the socket will render no video. If this doesn't work, try plugging it into a different port on your television to make sure the port isn't bad. If you still have no video - the video part of the cable could be bad and you might need a new cable.

Also make sure that if your cable has BOTH component and AV connections available that the switch at the end of the cable near the Xbox is set to "TV" as opposed to "HDTV"

*Solution for Component Cable*
Also check to make sure that all the video connections are fully plugged in. If even one of them isn't plugged in fully, it could render no video. Also make sure that you have them properly plugged in to the right color. If you're just quickly connecting it to the back of the TV without proper lighting, it can be easy to confuse the blue and green connections.

When using component, make sure that the switch at the end of the cable near the Xbox is set to "HDTV" as opposed to "TV".