I measured voltage across the inductor hoping that was the issue (like here: https://bitcointalk.org/index.php?topic=1420909.0). However I believe 8V is ok when testing on a bench? I basically just plugged in the boards 3 PCIe 12v connections and measured, didn't power on the machine. Tested at the PCIe plug and across the inductor to ground (see below):
https://i.imgur.com/Mpa0L7n.jpg
https://i.imgur.com/kuRbjnO.jpg

Is this voltage OK in testing or does it need to be 9.3V like the potentiometer fix says the board needs to power on? Again, all boards show "o" on the status page but refuses to hash and brings the other boards down with it.

Lightfoot, I cannot PM more than twice a day apparently... hope you are looking here too