Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This is an expansion of a Post your favorite card of all time post I made.
I have no idea why this works! Logic tells me that is should NOT work. But nothing ventured, nothing gained! The moral of the story is, fellow [H]ers, never give up!
I call BS, a broken card is a broken card how the hell can it fix it self magically
I call BS, a broken card is a broken card how the hell can it fix it self magically
Reading can do wonderous things for both graphics cards and humans alike!
I call BS, a broken card is a broken card how the hell can it fix it self magically
i just got a pair of 7800 gtx's on ebay that were listed as non-working, untested for about $80 with shipping. I'm going to see if it's the same thing. I'll let you guys know.
edit:
video card one has the same burned out mosfet in the same location... will take pics of it and post the results... i haven't had a chance to look at video card 2 yet...
2 days later, any news?
K, I got two 7800GTXs from the same online recycler guy on ebay. $41 a piece and they dont work
K, I got two 7800GTXs from the same online recycler guy on ebay. $41 a piece and they dont work
What was their condition? Did you check all the mosfets? How about the core under the heatsink? Also take a look at the back of the board. I have seen boards with other parts broken off or missing that I was able to fix by finding a simple replacement.
If you take some pics and post them, maybe we can trouble-shoot.
The burnt mosfet on mine is marked Q8. What did you use to pull yours off?
Yeah... those pics aren't the greatest. The burnt mosfet was in a different place on all three of my cards. On yours, it looks kind of like the one in dead-center is off-colored - some burned-looking coloration around the chip. Is that correct?
HAHAHAHA!!!! IT WORKS!!!!! WTF!!! w00t w00t!
To the OP and anyone else who has attempted this, weren't you afraid of a potential fire when turning the system on? Or is a fire not possible by just removing a MOSFET? Me is a n00b at electronics.
I would highly recommend NOT overclocking any of the cards that were "repaired" by removing the shorted MOSFET. Until someone does some power calculations for what is dissipated in each MOSFET at load with one MOSFET removed and referring to the datasheet for maximum input power, current, voltage as well as dissipation, I'd be very careful.
I wonder if these MOSFETs can be bought online and soldered back on as long as the traces and pads are not destroyed. If someone had a schematic of the voltage regulator sector of this card then it might be possible to reconstruct your own circuit and bypass the original traces (i.e. ghetto wiring job). I doubt microwave frequencies are present within the MOSFET network so electrical length doesn't matter much.
Good luck with the ones that work though - it sure is a deal! Hopefully they continue to work after a year .