Ouch man, that bites. Oh well, at least they're cheap. I wonder if it be safe to use a 10k on the VDD?
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Ouch man, that bites. Oh well, at least they're cheap. I wonder if it be safe to use a 10k on the VDD?
I'm going to pull the 100k and test since all voltages are still responding normally, the chipset is just burnt out I think.
STEvil...its been a bit since I messed with this board, but I am staring to wonder if the Vdd mod I have posted is incorrect.
Make sure its not the Vagp mod.....
That FET leg where I am measuring Vdd, make sure thats not Vagp read point.
I dont recall if there is a bios setting for Vdd and/or Vagp, but someone check if there is and then make a couple of changes to see if that FET registers them or not. If a change to Vagp in the bios makes a change on that FET reading, then this is Vagp mod and not Vdd mod.
Someone let me know on this please so I can make a change.
BTW, a friend of mine had this board and the SB burned up quickly...check that as well STEvil.
Yeah, theres a setting for vagp but none to adjust vdd. I should have verified it first.. oops ;)
If I unsolder the southbridge what do i lose feature wise other than some USB ports?
EDIT
I think maybe we do have it backwards.. the other mosfet(s) read 1.71v default.. tad high, but who knows.
It's definitely backwards in the pic Hell-Fire posted-I'm reading 1.6v off of that FET leg, which is my AGP voltage. I followed this pic from Cellemine1Gig, but I still can't get any kind of increase for some reason:
http://home.t-online.de/home/ingmark...20overview.JPG
Still, this seems to be the VDD mod.
The one closest the PCI slot reads 1.71v default on the left leg (has wire attached to it) and the one closest the southbridge reads 1.71v on the backside for me at default.
What I am thinking is it may prove easier to remove the VDD mosfet and link the output of the vAGP mosfet to where the output of the VDD mosfet goes...
The problem is doing so raises a few problems possibly.
Cellemine1Gig - have you tested the VDD mod?
your monitoring point (as shown in Iggy's pic) is different than what myself and hell~fire did (http://www.xtremesystems.org/forums/...772#post454772) but after checking with my DMM there is continuity bewteen both monitoring points and the backside of the mosfet closest the agp slot....
It seems the way Shuttle set up the voltage supply for vagp and VDD on this board is linked together, so if you guys are doing this mod I would be very VERY carefull...
Of course I tested the VDD Mod. It worked without a problem the way it can be seen on the pics. I set the VDD to 1,8V and the VAGP stayed the same, at the default 1,5V. Also set VAGP to 1,6V once, to see if they were linked, but nothing changed except 1,6V for the VAGP. ;)
You just need the right measuring point (like in my pics).
The point that you and Hell-Fire used, is the measuring point for VAGP, that's why I was confused at first, too.
Ok, strange how mine still doesn't work:
http://www.xtremesystems.org/forums/...&postid=514778
Maybe you can try it out STEvil and see how it goes for you. :)
I should go give this board another run.. figure that out for sure.
EDIT
OH MY GOD
:slobber:
This board is capable of putting 4.0v into the CPU (TESTED!) and nb voltage up to full +3.3 line!!!! LOL
No wonder my nb is a crispy critter.. and yes, the measure point we have is wrong hellfire.. but the VR only needs to be 25k for the VDD mod.. 50k would be best with a 1k or 2k fixed inline.
Holy crap 4.0v!!!!!!
EDIT 2
DO NOT take the board above 2.6v for "extended" use... even you LN2 guys :D I was moving up slowly and at 2.9 the board kinda fizzed at me the shut off... its a gonner completely now, lol :D
Roger that STE.
I will edit this so no1 else makes a fatal error.
Thanks for all for their help in this.
But just to make sure of this, my mod was correct, just had wrong read point for Vdd?
Exactly! The mod was absolutely right and works without any problems ;)Quote:
Originally posted by Hell-Fire
But just to make sure of this, my mod was correct, just had wrong read point for Vdd?
Thanks for the heads-up on that, as well as the confirmation that it does work.
Thanks to STE and celemine for getting this cleared up. :up:
As I said, I did a little writeup (thanks to Hell-Fire and AA666 of course and all others who helped :) ) and now it's officially online, on W1zzard's new homebase, www.techpowerup.com
Here it is:
http://www.techpowerup.com/articles/...g/voltmods/103
Hope you'll enjoy it, i.e. you get your mods working and the board going as high as it gets :D
Greets and BIG THX again to all who helped find all mods
Ingmar :) :toast:
Sorry to bring this thread up again, but I've tried everything I can think of and I still can't get the VDD mod to work. As soon as I connect pin 8 on RT9203 to ground I read a resistence of 0.0 ohms. I've tried other resistors, other ground points, resoldering all the connections, and no ground and I'm still getting no change in voltage. I've surfed through all the pics in the guide and I don't see anything different in those mods from what I've done on my board besides ground points. I'm totally stumped on this one-any thoughts guys? Here's a pic:
http://img60.exs.cx/img60/1497/5187.jpg
It looks kinda iffy in the pic but I am actually connected to pin 8, and no the 2 pins on the brown resistor are not connected to each other.
BTW that's an excellent guide celemine. :)
Thank you very much! Exactly what I wanted to hear (that the guide is good anot that your mod isn't working ;) :D ).Quote:
Originally posted by Iggy
Sorry to bring this thread up again, but I've tried everything I can think of and I still can't get the VDD mod to work. As soon as I connect pin 8 on RT9203 to ground I read a resistence of 0.0 ohms. I've tried other resistors, other ground points, resoldering all the connections, and no ground and I'm still getting no change in voltage. I've surfed through all the pics in the guide and I don't see anything different in those mods from what I've done on my board besides ground points. I'm totally stumped on this one-any thoughts guys? Here's a pic:
http://img60.exs.cx/img60/1497/5187.jpg
It looks kinda iffy in the pic but I am actually connected to pin 8, and no the 2 pins on the brown resistor are not connected to each other.
BTW that's an excellent guide celemine. :)
Well, did you actually try the ground points that I suggested in my guide?:rolleyes:
Yes, I tried having the 20k grounded to pin 3 on RT9203 and it had no affect. The only explanation that I can come up with is that I'm somehow bypassing the circuit, although I'm not sure how that's possible, and I don't see how it would make a difference if the mobo was mounted in a case or not. Thanks again for all the help. :)
Well if I understand you right, then you used the mounting holes as ground, but didn't have the mobo mounted in the case when testing? If so, then don't wonder why it didn't work. AFAIK, the mountiing holes are only grounded through the case, i.e. without case, there's no ground on the mounting holes.Quote:
Originally posted by Iggy
...and I don't see how it would make a difference if the mobo was mounted in a case or not. Thanks again for all the help. :)
I was never too keen on using the mounting holes as ground as it is a bad solution anyway, in my opinion. There are better ground points all around on the PCB.
My Tip for you is to redo all the mods, that's to say desolder all cables and resolder them in the appropriate locations. IMHO, that would be the best way to finally get the mods working.
I also made a mistake when I first did the mods on the shuttle. Then I completely removed the mods and did them again as to be seen in my guide.
Give that a try and perhaps it'll work. ;)
No, I've got it mounted in a case. And I know this ground works beacuse I have the Vdimm mod grounded to it as well. But I'm still going to rip the whole thing out and redo all the connections on the VDD mod (everything else is working flawlessly). I'll see if grounding it to the P4 connector makes any difference. Thanks. :)
Nice Guide celemine. :up:
Nice YOU! :DQuote:
Originally posted by Hell-Fire
Nice Guide celemine. :up:
Without your help that guide wouldn't exist! I'm not that good.
But thx anyway :p:
@Iggy:
Hope redoing the VDD-Mod will solve your issues ;)
Ok, well I moved to a larger gauge wire (22) and changed the ground point to be on 12v ATX connector and so far I've had no luck. And yes my board is rev. 1.1, same as everybody else.
Iggy....would you consider sending the board my way??
I am curious why the mods are not working.
I would do the work for free as long as you cover parts and return shipping of course.
Wow, thanks-I might, but I don't really have a replacement on hand ATM. Part of me was hoping I would able to finish these mods off on my own, but I think at this point I need to have someone take a look at it anyway-whatever is causing the problem is beyond my knowledge, and I don't think there's anything in the pics that is an obvious answer. I'd consider it if I could get an estimate on shop time (it's my only gaming ready system ATM). At this point I'm even wondering if it's worth the time and effort to finish this thing off, since I get everything I need (250 fsb, sata eventually) with an Infinity for $90.
Ok, here's everything I did:
1) Changed the ground point for both the Vdimm and VDD mods to the ATX 12v connector grounds on the back of the mobo.
2) Changed the wire to 22 gauge on all connections except the pin 8 on LM341 > 1k connection.
Nothing has made any difference whatsoever. This is pretty much a last ditch attempt, but here's pics of everything at a bunch of angles:
http://img68.exs.cx/img68/1480/DSC77.jpg
http://img68.exs.cx/img68/5264/DSC78.jpg
http://img68.exs.cx/img68/4847/DSC00080.jpg
http://img68.exs.cx/img68/632/DSC00082.jpg
http://img68.exs.cx/img68/8639/DSC00086.jpg
http://img68.exs.cx/img68/401/DSC00089.jpg
Here's my last question-is it worth the effort to finish everything on this board, or should I just buy an Infinity? Thanks for all the help guys-I know how much fun a noob is lol.