I got a badly mangled xbox from a friend that i would like to repair and modify.
I've already chipped my xbox, so I've got some experience there, but I don't know how to interpret the behavior I'm experiencing with this one (I've consulted http://www.xbox-scene.com/articles/leds.php).
The guy I got the box from tore it up pretty good trying to get a disc out of the drive, so that's gone and not attached. From what he tells me, he was unable to eject before he attacked it and gave it to me.
With the optical drive removed, I tried powering it up. Power cycles three times, then the LED begins flashing red and green (no audio or video output is discernible; the thing is hooked up to an AV pack).
The explanation of "probably a bad chip or image" given in the article linked above doesn't seem likely to me, unless the "chip" being referred to is the CPU or something other than a modchip. I can try temporarily swapping the DVD drive from my working xbox into the bad one for troubleshooting if that matters at all.