QUOTE(TripleM @ Oct 14 2005, 09:52 PM)
I'm having the same problem. I don't have a 1.6, don't even remember which version I have (1.2 or sth), but I've been using my chipped Xbox (Xecuter2 Lite) for a loooong time now. Just went to my brother's room, turned it on: first it powers on, off, on, off, on, off and then starts to flash red/green.
I opened up the box and checked to see if everything is in place. It is, and all looks just how I left it when I installed the chip.
I have no clue as to what's causing this, but from what I can tell by Googling/searching so far, this problem will occur if I remove the chip as well.
If the problem occurs with the chip removed, then there is a ripped trace somewhere (probably the d0)