Need p35C DS3 Vcore/Vdroop mod (ISL6327)

17th July 2007, 12:02

Hi everyone

I am desperately searching for a vcore and vdroop mod for the p35C-DS3.
The lay out is not the same as the p35-ds3r as in the guide of VR-zone..

This is from the vr-zone guide (DS3R):

And this the lay out from the P35C-Ds3:

The chip on both boards is the same, the ISL6327
This is the pin layout of the chip:

Thnx in advance! Need it really hard!

17th July 2007, 21:47

Found the vcore mod point, soldered a 50k Vr on it and the vcore mod works

:clap: :clap: :clap:

Ni I only need the vdroop.
Anyone have tips?
Thnx in advance!!

jmke · 17th July 2007, 22:17

you're quick

my vmodding days have been over for quite some time

Massman · 17th July 2007, 23:09

Normally, the soldering points should be the same. Follow the leads from the little chips to the power regulator on the p35-ds3 and see what leg they're attached to. Then do follow the pin from the power regulator on the p35c to the little chips and you should end up with the vdroop mod.

Before you mod, check this reasoning first by doing the same for the vcore mod!!

18th July 2007, 18:49

Quote:

Originally Posted by Massman

Normally, the soldering points should be the same. Follow the leads from the little chips to the power regulator on the p35-ds3 and see what leg they're attached to. Then do follow the pin from the power regulator on the p35c to the little chips and you should end up with the vdroop mod.

Before you mod, check this reasoning first by doing the same for the vcore mod!!

Can you please tell me to which capacitator the traces of idroop and vdiff go to?

I tried see where the traces go, but i cant really see it.
Maybe you can see it on this hq pics (nikon d50 ftw

)

Massman · 18th July 2007, 19:02

Hmm, indeed hard to see.

Maybe another trick: the resistence between the idroop pin and the chip should be 0, right? Measure the resistence between the pin and some chips in the lower right area, you might stumble on the right chip.

18th July 2007, 19:35

Quote:

Originally Posted by Massman

Hmm, indeed hard to see.

Maybe another trick: the resistence between the idroop pin and the chip should be 0, right? Measure the resistence between the pin and some chips in the lower right area, you might stumble on the right chip.

What do you mean, the resistance between idroop and wich chip??

Massman · 18th July 2007, 21:07

This is harder then I thought it would be.

In the picture you can see 3 pins identified and 3 numbers. Would you please give me the resistence between FB and the red vcore point, so I'm sure I'm on the right track.

I believe that one of the two nearest numbers should give the vCore pencilmod. Please measure the resistence between the red vcore point and the four contact points of numbers 2 and 3.

Number 1 should then be the vDroop mod, although I'm not sure. If so, you should again solder a VR between both contact points with the value of 500k ohm.

Before you actually mod, please report back about the resistence values I requested. I wouldn't like you to kill the board because I gave wrong info

20th July 2007, 07:10

I fully insulated my board and did the vcore yesterday.
Single stage (prom modded by Jort), so i can't do the vdroop mod now.
But I will measure resistance tonight on my 2'nd P35c (backup board

)

Massman · 20th July 2007, 08:42

I saw the E4300 scores on HWBot

17th July 2007, 12:02	#1
El Snorro Posts: n/a	Need p35C DS3 Vcore/Vdroop mod (ISL6327) Hi everyone I am desperately searching for a vcore and vdroop mod for the p35C-DS3. The lay out is not the same as the p35-ds3r as in the guide of VR-zone.. This is from the vr-zone guide (DS3R): And this the lay out from the P35C-Ds3: The chip on both boards is the same, the ISL6327 This is the pin layout of the chip: Thnx in advance! Need it really hard! Last edited by El Snorro : 17th July 2007 at 12:27.

17th July 2007, 22:17	#3
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	you're quick my vmodding days have been over for quite some time __________________

18th July 2007, 21:07	#8
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	This is harder then I thought it would be. In the picture you can see 3 pins identified and 3 numbers. Would you please give me the resistence between FB and the red vcore point, so I'm sure I'm on the right track. I believe that one of the two nearest numbers should give the vCore pencilmod. Please measure the resistence between the red vcore point and the four contact points of numbers 2 and 3. Number 1 should then be the vDroop mod, although I'm not sure. If so, you should again solder a VR between both contact points with the value of 500k ohm. Before you actually mod, please report back about the resistence values I requested. I wouldn't like you to kill the board because I gave wrong info Attached Thumbnails

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17th July 2007, 21:47	#2
El Snorro Posts: n/a	Found the vcore mod point, soldered a 50k Vr on it and the vcore mod works :clap: :clap: :clap: Ni I only need the vdroop. Anyone have tips? Thnx in advance!!

17th July 2007, 23:09	#4
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	Normally, the soldering points should be the same. Follow the leads from the little chips to the power regulator on the p35-ds3 and see what leg they're attached to. Then do follow the pin from the power regulator on the p35c to the little chips and you should end up with the vdroop mod. Before you mod, check this reasoning first by doing the same for the vcore mod!!

18th July 2007, 19:02	#6
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	Hmm, indeed hard to see. Maybe another trick: the resistence between the idroop pin and the chip should be 0, right? Measure the resistence between the pin and some chips in the lower right area, you might stumble on the right chip.

20th July 2007, 07:10	#9
El Snorro Posts: n/a	I fully insulated my board and did the vcore yesterday. Single stage (prom modded by Jort), so i can't do the vdroop mod now. But I will measure resistance tonight on my 2'nd P35c (backup board )

20th July 2007, 08:42	#10
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	I saw the E4300 scores on HWBot