Hello

I'm in the process of upgrading to X-ecuter3.
Previous a x-killer was installed (directly soldered to the pin holes).

Short story: Removed old, installed the pin header and all other X3 stuff.
attemted to boot the box, got FRAG, no display at all.

Removed the chip, removed the soldered d0/Lan/Hdd cable and unplugged the reset/eject adapter
(effectivly removed everything installed except the pin header)

Still getting FRAG. I masured resistance over the points where the d0/Lan/Hdd cabels was installed, and it seems OK. No resistance between the point before and after the solder pint)

So I belive it's a problem is with the LPC bus. This also makes sence as I had unsolder the Xkiller first.
I'm afraid that that the problem is with the print leads, not the soldering, as the pin is not in use (no chip installed)

I have tried to measure it, but I haven't found any good diagram of what readings there should be. I came over one place where it said that there should be low resistance from the free pin hole to all of the pins.
Mesured with 2000K ohm, most pins read 6-14 in resistance. However, I do have tree pins that reads around 400

Questions :
1) Does it seems correct that the problems is with the LPC bus?
2) Can anyone please give me a link or something that will tell me what the readings for the LPC bus should be?
3) I assume that the newly installed X3 has a working bios installed, so everything should work correctly when installed correctly?
4) How do I unsolder the LPC bus? As all the pins is connected to each other, I find it difficult. As soon as I have losened one pin, it will faste before I get to heat up any of the other pins
(Xbox v. 1.2)

Hi,

since you said the XBox doesn't work even without the X3...

1st check if you connected two points when you soldered the D0/HD/LAN wire..
2nd look for a good picture of the pinheader area and make sure you did not rip of on of the parts around it .. there is usually a resistor and a condenser near the pinheader .. and this two parts are the regular victims...
3rd check if you have connected points around the pinheader or if there is any thing on the backside of the motherbaord that doesn't belong there eg solderparts from desoldering...
4th check if you have "good" solderpoints on the pinheader ...

cu

ohh I forgot ...

how to desolder ....
you can use a punp to get rid of the solder when you have heated it up .. one by one

you can use a desolder wire ...

both of this tools you can get at your local elektronic shop

maybe it is easier for you when you remove at first the plastic part of the pinheader .. so you can get one pin at the time and you don't need to worry about
durning of the Motherboard.... a new pinhaeder should also be available in your electronic shop....

about the measurement ... ther is an LPC Diagnostic Picture within the tutorials area of this page .. that can help you .. figureing out if your pinheader has connection to the correct ... point ... and you can detect a disconnection ...

cu

Thanks for the replays rana!

1) I have done this, seems OK
2) This seems OK
3-4) More in the dark here...

I have read the "LPC diagnostics (v0.1) turtorial", if that's the one your referring to.
It states that there should be a low resistance between all connections.
I'm getting high resistance reading between the available pin holde and pin 1, 2 and 9.
(pins numbered according to the last picture in the guide, see here: http://www.xbox-scene.com/articles/lpc-diag.php)

High resistance beeing around 450 vs. 6-14 on all other pins.
But there is a connection, so does this indicate an error, or is it correct but more resistance.

The problem with the desolving is that I seem to be unable to remove enough of the soldering tin to make the pin loose, so that I can just pull it up.
Guess I will have to remove the plastic.

Should I just pull it up jusing brute force???

Thanks again, regards Sturdy

Hi again,

the first picture in this guid showes you a pinout of the LPC and what Voltage you should read there ! Did you test this ?

... if you are sure that there is no "shurtcut" caused from to much soldering ...

if you don't have the voltage you need .. on one pin ... try to trace this back to the next connection point of the Mobo If you got your Voltage there you can try to fix the broken link ... or simply the solderpoint of the pin is "cold" ...


About desolder ... never use brutal force ... !!!
that could rip of the connections ... if you don't have the tools to desolder something .. don't do it it caould cause much more damage .. and you need to get the solder out of the pinheader holes .. to put a new one in later on !

cu