first: gotta verify that the new PSU works. I measure +5VSB on the ATX24 and get 0V. so I bridge PS_ON and GND, and check the other rails. nothing. I see the briefest flicker of a few mV, maybe, but it doesn't power up. I'm starting to think the new PSU is DOA and I just got super unlucky.
I verify mains again. 230V on the dot. just to be sure, I go check that my multimeter is reading DC correctly. yup, it's fine.
at this point I'm really thinking I just got a dead PSU, or the board killed it.
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