GPU surgeon attempts to rescue fatally-bent RTX 4090 that came in for a melted power connector fix — autopsy reveals shorted MOSFET that killed the GPU core

A GPU repair attempt on a fatally damaged Aorus-branded Nvidia RTX 4090 reveals a shorted MOSFET that caused the GPU core to fail. The repair technician encountered numerous issues with the card, including a bent structure, worn components, and improper thermal pad contact. Despite efforts to diagnose and fix the GPU, injecting current into the 12V rail revealed a catastrophic short circuit that ultimately led to the demise of the GPU core. The technician replaced the faulty MOSFET but determined the card was beyond repair due to the extent of the damage. This incident underscores the challenges of repairing intricate hardware like high-end graphics cards.