Mjkthirdeye and Ticktanium,
I only get a green solid light with the modchip on (either chip, any flash).
Flashing red/green (frag) with the chip removed or disabled.
So,
Mjkthirdeye, thanks, I see what you are saying and agree 100%.
Ticktanium, D0 Solder points or Bad Flashed Bios, and banging on the side of the box would make me a happy person. But in reality, I have something more than a badly soldered wires. I checked that 100 times and once again just to make sure.
To prove this, I got a v1.0 of Ebay missing a DVD drive and both chips (Xbit and 29 wire Xray) work perfect in that box. (using the HD from the problem child also) So... that leaves power supply and motherboard - including chipset, memory, cpu. All parts of v1.5 which I've only seen people with newer equipment suffering from this exact problem (not loose wires, bad flashes, power cord not plugged in).
I want to thank you guys for the tips, I will investigate the power supply, since that's the last thing I can look at without blaming the motherboard (including all of its components -which could very well be damaged as part of a MS anti-mod attempt om v1.5).