Microsoft Xbox 360 Console "faint red line tv screen" Questions

...sound tried three diferent cables and three different tv's but still no picture just a black screen and some faint lines sounds like you are going to get a red ring soon...your video card is going ...

...faint diagonal lines and a few white ones scattered about. after playing around with the scart inputs and switching them around a bit I have managed to get it working again and so I assumed it was a ...

...faint red lines seem to flicker across the top of the screen. thanks for help Fiend your solution direct from nintendo. Here is your solution.... ...

...faint red and blue lines rising through the screen. I did some asking and someone suggested removing the ground prong from the plug. I was reluctant to try this so I got another power cord and tried ...