Abit IP35 Pro - VMod needed

[nimrod_o]

Johnny, i have the non-pro version of IP35. The circuit differs a bit
here it is:



Sorry for the bad quality but is taken from a mobile phone.

Can u find the vdroop mod like this, or u need more info?

Bumping this...it has been a while and it seems lots of people including me need it.
So please if anyone can help with this it will really be appreciated.

[Astri]

I took the risk and i did this mod. It worked perfect for me.I connect that red spot to ground. But still, Jonnybravo (or an other electronics engineer) must confirm or else dont try it.

[nimrod_o]

I took the risk and i did this mod. It worked perfect for me.I connect that red spot to ground. But still, Jonnybravo (or an other electronics engineer) must confirm or else dont try it.

Could you post some pictures of your mod?
Did you use a 1kOhm variable resistor?
what were the results? no Vdrop? diminished Vdroop?

Help with this will be much appreciated.

[Astri]

At 700ohm is the best u can succeed as Jonny mentioned before. Vdroop is not dismissed at all but it wasnt as much as before.

For ground i used the metallic circles around the screw-holes. I dont have pictures of the mod cause i dont have the mobo anymore. It died from humidity after 2 hours dry-ice benching

Here is a pic that i found but u cant really see the mod, only the blue trimmer just to believe me

[nimrod_o]

thanks for replying ..=)
By the way how did you manage to find that spot in the first place?

[Astri]

It wasnt my invention :P:

JonnyBravo was the one who found out that the red spot in the pic below should be connected to a resistor in order to decrease vdroop.


The picture is from PWM's datasheet.

But still ....i dont have knowlege in electronics. I just used simple logic. So i wouldnt recommended it to anyone if an expert wont confirm

[nimrod_o]

thanks alot =) i will try and consult a few other specialists about this as well

[Johnny Bravo]

Yes that is the correct way to do the vdroop mod basically pin 15 to ground. I recommend buzzing out a passive component that is connected to pin 15 in order to avoid damaging the voltage controller and try to keep wire lengths short so a close ground point is ideal.

[Nosfer@tu]

At 700ohm is the best u can succeed as Jonny mentioned before. Vdroop is not dismissed at all but it wasnt as much as before.

For ground i used the metallic circles around the screw-holes. I dont have pictures of the mod cause i dont have the mobo anymore. It died from humidity after 2 hours dry-ice benching

Here is a pic that i found but u cant really see the mod, only the blue trimmer just to believe me

use nail polish and sealstring next time m8

Humidity is very high in Greece ?

[Astri]

I avoid using nail polish cause is hard to remove in case of RMA. The problem with IP35 is that the PWM is very very close to socket so u have to be careful. Humidity is high in my place since im just few km from the sea :P

[Nosfer@tu]

Acetone works GREAT

I have no problems.

http://www.octeamdenmark.com/forums/...read.php?t=509

[ibby]

@ johnny!

you big geek! :p

[Johnny Bravo]

ahh you're just jealous

[ibby]

ahh you're just jealous

who wouldnt be!

[nimrod_o]

I recommend buzzing out a passive component that is connected to pin 15 in order to avoid damaging the voltage controller and try to keep wire lengths short so a close ground point is ideal.

Sorry i don't understand what you mean by that....could you elaborate?

[Johnny Bravo]

Sorry i don't understand what you mean by that....could you elaborate?

No problem

OK in order to avoid damaging the controller chip, ie the big black square, foir the heat of the soldering or any mistakes its better to find the nearest component that it is connected or shorted to. You can do this by either having very good eye sight and tracing the copper traces on the board or much easier and safer using a multimeter with a continuity tester that buzzes when there is a short. place one probe on the correct chip pin of the controller and start trying the ends of the SMD capacitors and resistors near that area, when you find one that is connected use it as the soldering point instead.

Hope that helps

John

[Hazzan]

Any body know about Vmch mod for this board ?

Johnny Bravo maybe you can help !!!!

[Astri]

bios gives more than enough. P35 can go 550+ fsb with ~1.5v

[largon]

How about a vDimm mod?
I need to zap my D9GMHs...

[Johnny Bravo]

both vmch and vddr should be the same as those of the QuadGT, I'll have a look later tonite

[Johnny Bravo]

For reference:

http://www.xtremesystems.org/forums/...1&postcount=13

[Hazzan]

Thanks Johny I will try later

[largon]

QuadGT vDIMM mod works on IP35 Pro.

[Johnny Bravo]

QuadGT vDIMM mod works on IP35 Pro.

good to hear Largon

[cka3o4nuk]

Johnny Bravo
am i right ? as i can see one of the pins on mosfet place named g- ground?
it is ip35-e