[SOLVED] GTX1080 GPU dead after short circuit

Jan 18, 2019
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Happy New Year to all!
My year started with a bang. During rearrangement of my study I connected my PC and screens to different wall outlets because of the desk geometry. I turned on the screen and PC and realized I forgot to attach the hdmi cable. When approaching the PC case there was a loud bang, lights went out as the fuse jumped off and i could smell the electricity.

Besides that my index finger was numb (was in between somehow) the hdmi cable was very roasted, screen was dead and since then the GeForce GTX1080 is not showing any signs of life. By booting the power unit fan turns at full speed, the front lights flash as usual, the fan of the processor and the HDDs turn. I tried a GTX960 at the same slot and it works just fine. The diagnosis is that the 1080 has suffered from the shock.

Am I too optimistic that the GPU could still be saved or is it definitely toast? If it is possible at least to check the caps etc I’d be happy to give it a try. Outsourcing doesn’t seem to be an optionm a shop in Berlin stopped repairing GPUs few years back due to lack of spares, another shop didn’t until today respond, I don’t know if nvidia itself does such repairs. And as usual, my insurance says ‘it’s a bummer’....

Oh....The reason for the shorting was that the wall socket where the screen was attached (sarcastically via a power surge eliminator from Belkin) had a so called classical grounding but made wrong (yes, it only has two cables). The electrician could measure full voltage from the ground pins (or ground wings here in Germany). Since the other socket where the PC was connected was correct the circuit was closed. By checking all we found two other sockets in our house with the same mistake that could have cost the life of someone, like my kids for example. So much for German quality....

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Meeks
 
Solution
There is a very high chance that the gtx 1080 to be non-repairable, the fact that you had 240V on the hdmi output that is conected directly (almost) to the gpu die is very bad news. Go to an electronic repair shop and try to diagnose it but dont have too much hope that it can be repaired.
There is a very high chance that the gtx 1080 to be non-repairable, the fact that you had 240V on the hdmi output that is conected directly (almost) to the gpu die is very bad news. Go to an electronic repair shop and try to diagnose it but dont have too much hope that it can be repaired.
 
Solution
Thanks for the response, I'm afraid this will be the case. Although I forgot to mention that I actually didnt touch the GPU with the HDMI end under current but the back case of the PC. If this makes any difference...?
 


Yes, this makes a huge difference, you touched the ground (-) with the hdmi so it might be something on power delivery, there still is a smalll chance to be repaired.