my vote is that the paper clip's in the wrong spot. Wrong cable maybe? How about a pic?
He said the fans spin up, then go back off.
If the paper clip was in the wrong place, the fans would not spin at all, as the power supply would be off.
I've seen power supplies that behave exactly as he describes when powered up while attached to nothing.
The fans on the
miner require power to spin.
If the power supply is off, i.e., the paper clip is in the wrong place, those fans have no power available to spin them.
Maybe you mean you saw a power supply spin it's OWN fan and shut down? That would be different, and certainly possible - but that is not the scenario the poster described.