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Unbricking a GTX 285?

post #1 of 7
Thread Starter 
I got a "dead" GTX 285 in a batch of used parts. It came from a Dell computer and the original owner had attempted installing a Zalman GPU cooler on it. Unfortunately he got the VF3000 for ATI cards and didn't know the difference. The universal mounting on the bottom of the Zalman allowed him to attach it to the GTX 285 and actually covered the GPU die surface. After that he couldn't get it to boot. His long-suffering wife sold all of his computer parts on Craigslist dirt cheap and I bought most of them, the 285 was tossed in for free including the Zalman cooler.
When installed and all external power connected the two function LEDS light up green but it isn't recognized in BIOS. I tried using an old PCI card to boot into DOS with to try running nvFlash and reinstalling the BIOS on the card but it still isn't recognized. I've done a bit of research and have seen that it's supposedly very difficult to actually kill a GTX 285. Does anybody have any suggestions (other than using it for a paperweight) or know anybody that may be able to repair it?
post #2 of 7
Did the 285 come with the stock cooler? and have you tried it?
post #3 of 7
Ironically I found this today. Maybe it can be of some help to you:

http://www.overclock.net/graphics-ca...hics-card.html
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The Rig of Power
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post #4 of 7
Thread Starter 
He broke the stock cooler while attempting to remove it and his wife tossed it. I've inspected the card with a magnifying glass and don't see any physical damage, scorch/burn marks, scratches or other signs of trauma. I connected a spare 4-wire GPU cooler fan to the fan connector on the card and it spins when powered up. The Zalman cooler fits the GPU die perfectly and I cleaned up the surfaces, put a bit of Arctic Silver 5 between then and properly attached it. If the two external power connectors aren't attached the LED's light up red, when connected they light green. If I let it run in a PCI-E slot with another card in a PCI slot it does have a few warm spots on it after running for a few minutes (the back of the GPU, the back of the ROM chip and a few transistors). When I got it there was heatsink compound all over it. I cleaned it with denatured alcohol and a toothbrush to make sure nothing may be shorting out. None of the caps are bulging (I've repaired several XFX 8600GT's with bad caps) and nothing is visibly roasted on it.
I did all the steps in that guide a few days ago with no success then did some more research. I've found useful info at MVKTech.com, joined but can't log on.
Edited by bobbybluz - 6/18/11 at 9:40pm
post #5 of 7
wow that guy was a n00b... breaking a stock cooler AND forcibly installing an improper cooler... wow...

Bake it. It's possible the die overheated very quickly and busted some solder joints, or in his man handling of the card did the same.

also, IIRC the 285 requires VRM cooling, they might be dead too, which isn't worth the effort to try and fix probably.
Edited by DesertRat - 6/18/11 at 10:01pm
post #6 of 7
Thread Starter 
Not a n00b, a total idiot. He had a stroke and while he was in the hospital his wife sold all of his computer stuff on Craigslist for $200 (all new parts: Corsair HX-1000 p/s, 8GB OCZ Gold DDR3 1600, 5 Silverstone 110cfm 120mm fans, Samsung F3 1GB HD).
post #7 of 7
dang thats a good price, gotta love nontechnical people , wish i got that stuff....
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