Question EVGA SuperNOVA 850 G3

[Nordog]

Bought a PSU and it's always powered on even when no motherboard connected. It happens as soon as you connect Motherboard cable to PSU (it's full modular unit) and it kicks on. As my knowledge it shouldn't happen. Then got a replacement from warranty and it came with exact same fault. If you connect to pc then it powers on and cant shut down completely. Have a video for a problem. Any one know where the problem is? Meanwhile waiting for replacement second time...

View: https://youtu.be/gU1wr8xURg4

 

[RememberThe5th]

You are right, its weird that you got 2 lemons.
My delta server psu (from 771 dual socket) does power on without motherboard, but works fine when you hook it up to the board and start/shut off.

 

[Nordog]

Today i got a response from manufacturer support. That the cables itself might be faulty. It's my first full modular PSU so i don't have any custom cables to test. Anyway now the PSU is sent for replacement in hope that 3rd. one will work fine. And for server PSU i red that they are full time on, but this one shouldn't be.