I think one of the hashing boards in one of my November Jupiters just failed.
Basically, whenever I connect power to this board, it seems to short out the power supply so the power supply won't turn on. I've tried two different power supplies, and the same thing happens with them both when this board is plugged in.
The unit runs fine with the other three hashing boards plugged into the power supply.
I'm going to remove the bad board and inspect it tonight, but I think it's done.
This Jupiter started acting up a week ago and would randomly stop hashing, and I suspect this was the cause.
Are you trying to use multi-rail PSUs? My guess is yes. Use a good quality, Gold or Platinum single rail PSU for all mining rigs. Seasonic, Corsair and EVGA make the best PSUs for mining in my opinion.
No, I'm using a EVGA SuperNOVA 1000G2 PSU, which is solid. I tried two different PSUs, and neither of them will even turn on when the bad hashing board is the only thing connected to them.
Also, the Jupiter runs fine when I connect the other three hashing boards to the exact same PSUs.
This miner had been running fine 24-7 since early December.