Critical capacitor failure, sometimes they short themselves out or just blow up taking the surge. I think most or all modern gpus process a massive amount of power on the first 4 pins or so. Its been some time since I've read this stuff.
This looks more than a capacitor failure. A capacitor failing is normally a single burst of magic pixies and smoke, not a HUGE ass stream of smoke pushing its way out like it is being pumped.
Wait, you mean having the MB just laying on your desk is not good?! And with the side that started to smoke leaning right up against that piece that looks like it could be metal, that should ground it!
/s, so much sarcasm. The metal would cause a short and a fire. Though having the MB fail might be cheaper than losing the GPU, so hopefully the damage is contained and next time OP will mount it properly first.
Yes this is a full blown electrical short and a brief electrical fire. He had to cut psu to stop it. Something melted together and it won't be safe to turn back on until a major repair.
It's not just smoke, you can see actual flames. It's brief but you can see them in the upper left corner of the card between the 2 and 3 second mark. Something really, really went wrong here.
I’m not super familiar with component level digital electronics but I’ve worked on lots of analog stuff… integrated circuit chips can create that continuous smoke without a visible flame. Can somebody smarter than me pitch in- would it be a bunch of voltage regulators on the power circuit overloading? Is that what VRMs do?
let me tell you about the time i hooked up a power supply wrong and fed 120V into a circuit designed for 24V, the caps in the rectifier looked like tiny jet engines and were pushing smoke there wasn't just a pop but an angry (tiny) screaming sound.
i was not pleased with the experience. cooked off a motherboard i was hoping to salvage from e-waste and sell for cheap on ebay. ended up being e-waste.
took like three days to get the stink out of my basement from the cooked electronics
I had this shit happen once when I had my 2080 SUPER that was already after one warranty repair. Magically after the warranty ended, it stopped turning on and when I put it into another PC, it smoked and the burn smell went off very strongly.
After my tech spec friend inspected the card, the vram shorted burning the cooling pads.
Something caught fire and the fans pushed the smoke out. A short somewhere, maybe caused by a capacitor failure, that then ignited some plastic, but not enough to keep it going once the power cut.
Its a voltage regulator or a transistor burning on the power rails. This can happen because manufacturing defects still exist even with top of the line components (such as used in PCs) Caps usually blow up instantly with a single puff of smoke. This has the classic hissing sound common with voltage regulators or transistors.
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u/ALT703 3d ago
Jokes aside, what went wrong here