Server PSU resetting after 3-5 minutes

[unc0nnected]

Has anyone had this happen?  I'm using an HP 750 Watt gold PSU from parallel miner and the thing started resetting after a few minutes for no apparent reason.    I'm running an Asus B250 Mining Pro and have stripped away most of the gpu's to ensure that I wasn't overloading the PSU(confirmed 350 watt load via watt meter) but every time about 3-4 minutes after I boot the machine up, about 30-45 seconds after the rig starts mining, the PSU's fan will go to 100%, it will shut itself off for 5-10 seconds and then power back on again.  Of course in that time all of those gpu's are powered down causing windows to BSOD and the whole rig shuts down.

I've swapped the server psu out with a standard ATX 750 watt gold PSU from EVGA and it runs 24/7 without any issue in the exact same configuration so I'm at a bit of a loss as to what is causing this.  I'd really prefer to run server psu's because they are designed to go at 100% 24/7 so finding a solution to this would be great.  I've also swapped my one server psu out with another one that I got in the same order but hadn't used here yet and the same problem happened.

thanks

[Set Ready Go]

Could it be your pico psu adapter for the 24 pin and cpu?

I have no experience from server psus but i have read some motherboards might not like the adapters.


So try hookup motherboard only with the atx and have server psu only power the gpus.  If server psus have  no problem with that then must be adapters problem.

[m.vina]

That is strange. First time to hear that ever happen.

Are you sure you plugged everything in correctly? I'd go over some guides online on how to connect your server PSU. If it still fails, i'd ask for RMA from parallel miner.

[grendel25]

Yes.  Make sure all of your lines are plugged in firmly.  But before you do all these checks, turn off the power all of the way. 

Also, after verifying all connections are tight, consider what you are mining.  Is it a high power consumption?  Regardless, try mining some cyrptonight or Lyra2z algorithms coins to see how they perform and if the miner keeps shutting down. 

Also, are you going through a power strip/surge protector?  Depending on what else is plugged into the power strip you could be tripping surge protection which is typically at 15 amps even though the circuits are typically 20 amp circuits.  Sometimes that wont' trip the circuit breaker in the power strip but it may be enough to cause instability by nearly tripping the circuit breaker.

[westom1]

I'd really prefer to run server psu's because they are designed to go at 100% 24/7 so finding a solution to this would be great. 

All properly designed PSUs work just fine at near 100% load for 24/7/ten years.

Apparently the power controller sees something wrong and powers off the PSU.  Only that controller (not the power supply) decides when a PSU powers off or on.

Apparently a manufacturing defect in that one PSU is detected by the power controller.  To say anything more (that is not wild speculation) requires numbers.