Ghosted image on tv

I got my 360 about 2 weeks ago  from toysrus and it has been treated like a king since then. The first night we got a game for it, we played on our one tv via hdmi and played fine. I moved thew console to our tube tv with the component cables and was getting a ghosted image to the left of the actual image. I know that the tv is not the problem because our old xbox and ps2 work fine on it, I also know that the cables are not the problem. I hooked up component cables from a older xbox 360 and it worked fine. But, 2 days later it does the same thing with those cables, so I plugged in the one from the factory and it worked then. A day later it happened again and both component cable did the ghosting, Then the ghosting stopped for no reason. I want to figure out this problem while this is still under microsoft warranty, because I am thinking its a defect.