MSI HD3850 VMOD and go - Page 8

Jip · 6th June 2008, 10:16

perhaps in the tester ^^ because if you take te volt at "borne" the same side of connect DVI you have Xv and on the other borne you've X-0.1v +/-

No body've find for VDDR ?? because VGPU it's sucking ^^

OneyedK · 6th June 2008, 11:26

Nothing wrong with my knowledge of electronics and measurements

vDDR (the points marked with blue are ok, 20kOhm VR to ground):

Jip · 6th June 2008, 12:27

you've test oneyedk's ??

because for me with pencil mod the Volt decrease :/

OneyedK · 6th June 2008, 14:27

How did you do the pencilmod?

geoffrey · 6th June 2008, 14:27

Reminds me, Blind his card lost one component, you said it was a 2nf cap but how exactly did you measure that? In circuit measurement?

OneyedK · 6th June 2008, 15:31

Quote:

Originally Posted by geoffrey

Reminds me, Blind his card lost one component, you said it was a 2nf cap but how exactly did you measure that? In circuit measurement?

Yeps... I know, not the best method, but it's consistent with the reference design schematics...

Jip · 6th June 2008, 16:07

i pencil the R12... The resistance at 700ohm but the volt decrease :/

geoffrey · 6th June 2008, 16:14

Quote:

Originally Posted by OneyedK

Yeps... I know, not the best method, but it's consistent with the reference design schematics...

Well, I had a lot of troubles booting the card with such cap soldered onto it, no problemo when I took it back off. Ow, in case you found the voltmod, there are 3 RC circuits right next to the RT8802, these are probable used for sensing current and the over-current protection. I believe I have one of the three pairs removed on Blinds card, doesn't matter if it was there or not (for normal function)

Quote:

Originally Posted by Jip

i pencil the R12... The resistance at 700ohm but the volt decrease :/

then try to pencil the resistor which is connected between R12 and ground

Jip · 7th June 2008, 12:38

at the out of R12 i've 18ohm... And the circuit stop a few far without R on the way :/

Someone have an operationnel VDDR mod ?? or its just in theory ??

in gpu i've the same score of MassMan but on Memory i'm far

blind_ripper · 9th June 2008, 17:29

now i got a vmodded card

, problem passing 1.3vgpu on 3d and it jumps to 1.8+ to 1.9vgpu !!!!
anyone can find out why the hell its doing this ???

6th June 2008, 10:16	#71
Jip Forum Member Join Date: May 2008 Location: Oupeye Posts: 204	perhaps in the tester ^^ because if you take te volt at "borne" the same side of connect DVI you have Xv and on the other borne you've X-0.1v +/- No body've find for VDDR ?? because VGPU it's sucking ^^ __________________ XClio A380 \| HX520W \| TPower I45 \| E8500+C12P \| 2Gb TeamGroup+XTC Cooler \| 4870GS+HR03GT \| 7200.11 \| 226BW "S" Next : Rhéobus \| VGA ??

6th June 2008, 12:27	#73
Jip Forum Member Join Date: May 2008 Location: Oupeye Posts: 204	you've test oneyedk's ?? because for me with pencil mod the Volt decrease :/ __________________ XClio A380 \| HX520W \| TPower I45 \| E8500+C12P \| 2Gb TeamGroup+XTC Cooler \| 4870GS+HR03GT \| 7200.11 \| 226BW "S" Next : Rhéobus \| VGA ??

6th June 2008, 14:27	#75
geoffrey [M] Reviewer Join Date: Nov 2004 Posts: 4,117	Reminds me, Blind his card lost one component, you said it was a 2nf cap but how exactly did you measure that? In circuit measurement? __________________

6th June 2008, 16:07	#77
Jip Forum Member Join Date: May 2008 Location: Oupeye Posts: 204	i pencil the R12... The resistance at 700ohm but the volt decrease :/ __________________ XClio A380 \| HX520W \| TPower I45 \| E8500+C12P \| 2Gb TeamGroup+XTC Cooler \| 4870GS+HR03GT \| 7200.11 \| 226BW "S" Next : Rhéobus \| VGA ??

7th June 2008, 12:38	#79
Jip Forum Member Join Date: May 2008 Location: Oupeye Posts: 204	at the out of R12 i've 18ohm... And the circuit stop a few far without R on the way :/ Someone have an operationnel VDDR mod ?? or its just in theory ?? in gpu i've the same score of MassMan but on Memory i'm far __________________ XClio A380 \| HX520W \| TPower I45 \| E8500+C12P \| 2Gb TeamGroup+XTC Cooler \| 4870GS+HR03GT \| 7200.11 \| 226BW "S" Next : Rhéobus \| VGA ?? Last edited by Jip : 7th June 2008 at 13:02.

6th June 2008, 11:26	#72
OneyedK Forum Member Join Date: Dec 2006 Posts: 73	Nothing wrong with my knowledge of electronics and measurements vDDR (the points marked with blue are ok, 20kOhm VR to ground):

9th June 2008, 17:29	#80
blind_ripper OCTB Crew Join Date: Apr 2005 Posts: 1,338	now i got a vmodded card , problem passing 1.3vgpu on 3d and it jumps to 1.8+ to 1.9vgpu !!!! anyone can find out why the hell its doing this ??? __________________