Looking for the layout of the visiontech GF3

[Morphoius]

While moding my GF3 i managed to crush 2 resisters. it worked perfictly for a while with one of the resisters completly gone and the otherone half left, but recently it has gone to hell, first with what i think was the undervoltage of the memory leading for me to hardcode lower memory and core specs into the bios, and now with the problem even more greatly compounded with colors turning differant leters on the post and subsiqeuent screens. i am interested in finding the values of the resisters i crushed and saudering back on replacments, however i have no idea what their value is. I might be able to post screanshots if that would help, but otherwise i just need the layout to get the values from. any help would be appreciated.

[Morphoius]

I have a c456 value from one of them and a c460 for the other.

Also a note on removing the epoxied memory heat spreaders:
Everyone always says leave it in the freezor for 30 minutes or even as low as 15 or 20. in my opinion you are just playing with it at that point as it might not be enough so just leave it in their for a couple hours and even the artic silver epoxy that i had covering the entire chip came right off to a little pressure from a screwdriver.

[Silversinksam]

Did the screwdriver contribute to the broken resistors?

If so I recommend highly that you place a credit card under the screwdriver so lightning doesnt strike twice.


I remember I learned that lesson the hard way as long ago on my first rage furry max i broke a couple of them little resistors....and I'll not use a screwdriver without a credit card ever again :mad:



:burn:

[lee]

try going to hardocp - they just published some articles on the visiontek-line of gf3 cards and had some closeups if i remember correctly..............i would link to it but am not allowed (am not a moderator/senior member)...............

[KILLorBE]

Originally posted by lee
i would link to it but am not allowed (am not a moderator/senior member)...............

You can post a link if its related to the topic.

[el]

Originally posted by lee
try going to hardocp - they just published some articles on the visiontek-line of gf3 cards and had some closeups if i remember correctly..............i would link to it but am not allowed (am not a moderator/senior member)...............



who told you this? we are all about sharing knowledge here at overclockers.com only in your sig are you not allowed to have hyperlinks to other sites. hope this clears things up for you.

[It_The_Cow]

The rule is that it can't be blatant advertising. If you're linking to something that will help another person, them it's fine. If you're blatantly linking to a personal website trying to get hits for no reason expect for the hits, then no. ie: If I were selling something on eBay, then I wouldn't be able to link it regardless of my rank. If someone was desperately looking for something that happens to be on eBay, then linking is fine. Mods, correct me if I'm wrong

[Monaco]

I also have a Hercules GF3 that is dead due to destroyed resistors- cold water + hot resistor= resistor literally jumps off PCB and shatters:)

Mine is in the C240 position. I've tried emails to Hercules and nVidia both, with no luck at all. If you find any info, PLEASE share it with me!

If worst comes to worst, I will desolder and test the resistors you need on my board, if you'll do the same for me on yours. They should all be the same- nVidia reference design, right?

[Morphoius]

Yes, mine is the referance design, and i have a voltameter somewhere so i will test the resistance of that one.

I used a credit card, but i still crushed it, so just be careful to make sure that there are no resisters underneath where your screwdriver is.

[Morphoius]

Alright, i found the C240 thing. i think i was wrong though in calling it a resister. i think the "C" or the "R" denotate capasitors and resisters. Therefor the ones i blew and the one you blew are capasitors.

BTW: the ones i destroyed are on the front around the bank of memory chips going from the top to the bottom of the card. one is above them in the middle and the other midway through them on the left side.

[lee]

well, i went back and actually looked at the pics in the article - i thought they might be better closeups than they are...........but they aren't, sorry..................(least i went back and looked but you still may wanna look for yourself)............

[Monaco]

Well I think it was a resistor because of what it looked like inside but I could easily be wrong! it was underneath (above?) the GPU core, a bit to one side. Near a mounting hole for the HSF. Looks like a brown rectangle shape with silver endcaps.

if you know the resistance or capacitance value for these, hook it up! I have a feeling that they are all the same value, however I dont want to have to desolder a few and test em to find out.

hmm, I was about to tape a sliver of pencil lead on there if it was a resistor, but how can I fake a capacitor? I want to play with this thing but not destroy it totally:)

[Über~PhLuBB]

Originally posted by lee
try going to hardocp - they just published some articles on the visiontek-line of gf3 cards and had some closeups if i remember correctly..............i would link to it but am not allowed (am not a moderator/senior member)...............

You can post any link in any thread. You can't put an off-site URL in your signature though, I think that's what you're thinking of.

[Morphoius]

A capasitor has two sides seperated by an insulator. if you look at your card the capasitors and resisters look very differant. (resisters are the small black things).

A capasitor works simply by allowing charge to build up on one side and not the other so that overtime the resistance starts near zero and moves to infinity. if the voltage stops then the energy stored in the capasitor is released providing for voltage going in the opposite dirrection until the capasitor is empty.

The capasitor on the card is probably a real small one therefor if you went to radio shack you could pick up a 1uf one or smaller and see if it works.

I looked around hardocp for that picture but apparently i'm not familiar enough with the website to find it. If you would like to it that would be great.