Anyone who understands the technical chip boot process . . .

Vol4Ever

Full Member
Jan 29, 2005
56
0
Piperton, TN
My D0 was soldered under an electronics microscope & has been checked MULTIPLE times with a voltmeter. It is positively connected to the chip. Ditto for gray and white wires on points 13 & 14 which read the proper 3.3v. However, I get the same problem as lots of others. Chip lights up, but does not boot. MS dash comes up every time. However, if I manually jumper a wire from a ground point to the D0 point, the chip boots to X3CL. With this "permanent" ground in place, I can *never* get to the MS dashboard as the boot process is automatically hijacked every time.

My pin 15 doesn't have anything connected to it, but I do get the proper 3.3v from pin 9. The blue led for 3.3v on the chip itself lights up properly. Is there any other reason to bond pins 9 & 15, or is it recommended ONLY if you are having trouble getting the 3.3v LED to light up? In other words, would bonding these 2 points together help with the boot hijack even though the chip gets the proper 3.3v as it's currently wired?

Does anyone understand (from a purely technical standpoint) how the chip grounds the D0 out to "hijack" the boot process? Is there some sort of switching process that occurs inside the chip itself? I have tested everything else I can possibly think of.

~Vol
 

Vol4Ever

Full Member
Jan 29, 2005
56
0
Piperton, TN
Vol4Ever said:
However, if I manually jumper a wire from a ground point to the D0 point, the chip boots to X3CL. With this "permanent" ground in place, I can *never* get to the MS dashboard as the boot process is automatically hijacked every time.
If some of the technical gurus out there can help with this issue, there seem to be lots of people on this board who would benefit. I'll be interested to see from those having problems if a temporary D0-ground jumper allows the chip to boot . . .
 

Jorde907

Junior Member
Jan 19, 2005
12
0
can anyone repair my xbox it does that 3 frags and then nothing does it with and without the chip.I've resoldered it a couple times the only thing i can think of is a broken trace but i cant find any and everthing tests well with a multimeter. Any suggestions
 

michael816

VIP Member
Sep 12, 2004
556
0
maybe there is an inernal break in the D0 wire... this is wierd

and Jorde907: this is not the right fourm/thread to post that.