Dead RTX 4090 gets cooked beyond salvation — VRAM swap and multiple signal patch jobs fail as buried PCB traces give up for good in unsuccessful repair attempt

A lifeless RTX 4090 with 48GB of VRAM landed on a repair bench, showing no display output. What followed was a deep dive into diagnostics, power rail checks, and trace hunting—only to reveal hidden PCB damage so severe that even expert fixes couldn’t bring the GPU back from the dead.

https://www.tomshardware.com/pc-components/gpus/dead-rtx-4090-gets-cooked-b


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