No experience with this unit, maybe you have tried these things, but I would be looking at the below.
I assume you are getting failure with 0 disks in the unit.
Have you tried disconnected the backplane power, and maybe signal, maybe fans in various combinations? Maybe problem is localized.
Seems like has redundant power? Does it still fail with each of the power supplies connected individually?
Have you checked the voltages coming out of the power supplies and power distribution board? 12V is probably OK if the fans are working, but worth checking anyway if you are going to check.
Your best bet in my opinion is to figure out case by case, which cables and cards do what, how they are behaving, and how they should be have.
It working for a short moment could be, it entering a Error State.
You could try to connect to it and get some Debug output. UART / Com etc.
I once had 5 different server boards, two supermicro X9dri-f, who did develope a dislike for some power-supplys.
The issue in particular was named “power good assertion failure” and was reproducable.
The interesting thing was that it is PSU dependent.
So you could take 2 psus from the same brand, and it would work with the one, not with the other. But the other, would work too with any other board that didn’t have this dislike.
I have no clue what that was or why it happened, but it happened with Intel, Fujitsu and Supermicro Servers, so nothing supermicro specific.
How do I fix it? Solder somehow (not my forte)? I could probably get the necessary pressure applied with some electrical tape, but that’s not great.
I’d just replace the power distributor (PDB-PT837-8824) but it’s hard to find. I wonder if I can adapt any of the other power plugs to this one. I have no idea what this is though…
That was very helpful, but idk. The red wire is loose, but the crimped end doesn’t move which makes me think that the red wire has become detached from the crimp.
I’m afraid that if I pull it out, I won’t be able to put them back together, so I’m going to try and super glue it in and then cover it with electrical tape… at least until I can get a replacement part in…
Worst case, I can cut off the end, strip it and tape the wires to the pins.
If all of that is the stupidest thing you’ve ever heard, let me know.