That red/green flashing after 3 startup attempts is what I get. I've soldered that damn D0 so many times the point is no longer visible on the board

I'm 50% sure I've destroyed the Xbox but when I pull the Cham off and power on without the DVD/hard drives attached it *seems* to start normally (apart from it flashing about the drives). I've been messing with it for hours and I'm really thinking I shoulda just attached it to the Matrix and been done with it... But now I'm giving up for the night.
So am I almost there or is my Box completely dead? I'm gonna pull the chip off and connect it to a TV tomorrow to see if it's completely dead but if anyone knows, or has had this themselves... Let me know!
Cheers,
Mike