Question Pinout diagram for Xigmatec NRP-MC751 ATX PSU ?

[CraZeddy]

I have a Xigmatek NRP-MC751 ATX PSU without the original cables that plug into the PSU. I’m hoping to use it to power a project and need it to operate similarly to a bench power supply. I do have the round bundle of wiring that includes the 20+4 Molex connector, but the other cables appear to be specific to this PSU. The user manual available online describes the other ends of those cables, but that doesn’t help me determine which pin each wire is connected to. I can ground the power on pin and add load across 5V, but according to manual I need a minimum load across each of the 12V rails to power it up. As it is, the PSU turns off almost immediately ( < 0.5 sec) on power up. Can I figure out the pins using a multimeter? Better yet, does anyone know what they are?

 

[--SID--]

Don't know the pinout on the modular PSU board but what I do know that it's a terrible unit in the first place. I don't see any usecase fot this unreliable piece of garbage. So finding modular cables for this PSU is a waste of time and a waste of money.

 

[Ralston18]

Multimeter - yes.

The following links may prove helpful:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

How to Test Computer Power Supply | Easy Steps to How to Check PSU - TechDim

The only way to know is to map out the pins and measure them one by one via the cables that will be used for your project.

Do not switch the cables unless you recheck the measurements on the replacement cables.