Question GTX 1080 Hardware diagnostics

May 10, 2020
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Can anyone point me into right directions?
I have GTX 1080 that crashes in benchmark and randomly display is going blank, sometimes it restarts PC. Temperatures are okay.
I know it's a hardware issue not my system or PSU and there is no doubt with that.

But, how to diagnose such a thing? It's easier when card is dead or no display at all, as I can measure voltages and resistance in certain places.
Anyone have an idea what could be failing? Maybe personal experience?
I want to use that card for learning purposes, would be nice to figure it out.
I am struggling to find any proper schematics too, but not sure that would help anyway.