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[Unseen Shadow]

OK, so Apparantly I shouldnt take a 6 month break from modding and jump right back in again like Im up to date with everything. Ive modded loads of xbox's and never had any problems like this, but i think that can at least partially be attributed to the fact that its been quite a while since ive tackled a 1.6b.  I used a duox2 rebuild pcb that i had kicking around thinking that it would cut my time down dramatically as it had in the past.  Now when i put the chip on the header with bt grounded and d0/lframe attached to the chip(i cant be bothered to cut the trace at this point) the xbox turns itself on, and then off and then on and then off, and repeats, usually i think this is a bt short but i checked everything out and its fine.  When i take the chip off of the header it boots up the MS Bios.  Now I'm not sure on this one, and i can't search as its down, but i think i may have left too many pins on the pinheader.  I remember, the last time i did a 1.6 (probably a good 6 + months ago) that i removed a lot of the pins on advice of a friend that i can't get a hold of at the moment, and i didn't have any problems.  If anyone could provide me with a digram, or a pic showing which pins need to be there and which dont for a 1.6b install.  Now this is odd...., but before... i got it to boot up and show me a nice little evox logo in the corner...and now its not doing that.  I think the problem is i have a big pile of chips and i don't remember which one has which bios on it.  I will try one more, but also wait for the digram.  I will also go over the rebuild again.

Cheers,


Unseen Shadow

[Chancer]

It should not make any difference even if you leave in all the pins as the unused ones go nowhere anyway.
The pic shows the female header with the pins removed, so you should be able to work out which ones to remove.
(IMG:http://www.fixnchipz.co.uk/_wp_generated/wp8367059f.png)
You could always fit a female header in the quicksolder slot with the relevant pins removed to save disturbing the LPC
Everyone says pull pin 4  (I never do).
Check the lattice chip (you may already have done this)
4064 should be BT to L1 for always enabled and flash enabled.
4032 should be BT to pin 2 on the chip

[kaldek]

QUOTE(Unseen Shadow @ Apr 3 2006, 04:10 AM)

Now when i put the chip on the header with bt grounded and d0/lframe attached to the chip(i cant be bothered to cut the trace at this point) the xbox turns itself on, and then off and then on and then off, and repeats, usually i think this is a bt short but i checked everything out and its fine.  When i take the chip off of the header it boots up the MS Bios.

This is a late reply, but what the heck.  I have the same problem on a Duo X3 (basically two Aladdin XT's on one board).  My LPC rebuild (the first rebuild I've done) was flaky since I used wires that were too thick.  I discovered that this problem is symptomatic of one of the LPC wires not being soldered properly.  In particular, the one circled in the following image, but consider that it might be the pinheader solder job which is busted rather than the small dot on the board:

(IMG:http://members.optusnet.com.au/edwardluck/lpc_fault_location.JPG)

Since then I now exclusively use Enamelled 30AWG copper wire (also known as "winding wire" for electric motors).  30AWG, which is .254mm, is *almost* small enough to fit in the tiny holes in the motherboard, so I also have a roll of 34AWG (.17mm I think) which does fit.  If you can fit the wires into the holes it makes the solder job stronger.  In order to solder enamelled wire I just scrape off the enamel at the end of the wire with the blade of a knife.    I also use one of those headstrap-mounted magnifying glass setups, which are brilliant for actually seeing what you're doing, especially since I'm slightly long-sighted and can't get up close to the board to see what I'm doing.

I have also had BT issues with the DuoX3, whichI think I caused when I happened to pull the chip off the pinheader a couple of times whilst the power was connected to the Xbox.  After that, with BT soldered (to the board and to the X3) the system would power on by itself, refuse to ever power off and would not eject the CD.  I decided I didn't need the MS Bios anyway so I just disconnected BT and left it with the problem (probably it self-grounded somehow).  If I really cared about it, I would toss the X3 and replace it with a real Duo X2.  I mean seriously, why place the Bios switch selector on the *underside* of the board where you can't get to it without removing it from the pinheader??

[Chancer]

The fault turned out to be the P/E board as far as I know.
Unseen did you get my e-mails? Re this?