Xbox not booting with OpenXenium (Prometheus) modchip connected

[PluueeR]

Yesterday I installed the OpenXenium modchip from one Xbox to another (both 1.6 revs). I had to disconnect the LPC rebuild PCB, which was kind of a nightmare, but it worked. After installing it, the Xbox booted with modchip connected. But didnt't start without it. Which I thought was weird. So I tried reflowing a couple of the connection with no luck, instead the Xbox wouldn't boot with or without the modchip connected.

I decided to remove the LPC rebuild PCB and restore the LPC by handwiring it. Now the Xbox does boot without the modchip connected to the LPC port, but with the modchip installed it doesn't. The green power LED turns on for approx 1 second. And on the OpenXenium a RED led.

I have already ordered a new LPC rebuild PCB. Hope anyone over here knows how to solve this. I already meassured al of the pins on the LPC port with a multimeter and all expected voltages are present. I have bridges the two pads on the OpenXenium which are neccesary for a 1.6 rev.

[MadMartigan]

Did you try grounding the chip to d0 and have you tested the LPC connections for continuity with a multimeter?

[PluueeR]

I followed this tutorial https://youtu.be/ICRS3yHICKQ?t=1181. I installed the same modchip on a 1.0 Xbox, then I connected one wire van D0 on the mainboard to the pad on the modchip.

[MadMartigan]

It's a good tutorial. Your solder points may not be making a solid connection from what I sounds like. The LCP isn't seeing the chip when you turn on the xbox. 

You really should check for continuity to ensure that every signal is going where it needs to. 

After reading your first post again, the console will no longer boot normally without the chip since it's looking for the chip to boot. That's why you rebuild the lpc in the first place. You had I right the first try. 

[MadMartigan]

Try removing the d0 point only and see if it will boot. 

[dtomcat]

Looks like a lot of flux left on board?  May want to clean that up as well 

[trencherfield]

Looks like there is a bridge to the via.

[PluueeR]

@trencherfield I removed that little bridge but with no luck.

I have solved the problem be ordering another OpenXenium chip and LPC Rebuild Board. I installed the LPC Rebuild Board and the original OpenXenium chip... without any luck. Same result. I switched the OpenXenium chips and everything came back to life  Guess the OpenXenium chip has been bricked. Maybe because I shorted the Recovery pads while trouble shooting?

I guess the handwired LPC I did, did work. But my modchip wasn't.