[SOLVED] Evga 750 GQ can't power case fan controller?

[Mixo Maisuradze]

Hello,
The problem I am having looks like kind of compatibility issue between EVGA 750 GQ and Zalman Z7 Neo case fans and controllers that come with it.
The fan hub comes with single Molex connector for power.

When I connect it with in my EVGA 750 GQ either or periph modular ports with suitable Molex connector(PSU ORIGINAL) fans just don't work.
I thought It was bad controller but turned out it was something with the power supply. I have two different EVGA 750 GQ at hand and it
doesn't work with any of it, though it works on some unbranded psu. And It had been working with my other EVGA PSU ( Supernova G1 750w).

(To clarify, I have tried different sata/periph ports and with different cables lacking any success on 2 different PSU-s of the same model, the fans themselves arent connected to MB chasis(it all goes to central hub) and it does work on another PSU such as EVGA SUPERNOVA G1)

What could be the case with EVGA 750 GQ and molex case fan hub incompatibility, is there any way I can make my fans work on this psu?


CPU: R5 2600
Motherboard: B450 Aorus
Ram: 2x8 GB G skill trident Z royal 3000mhz
SSD/HDD: SAMSUNG 970 EVO
GPU: RX 580 8GB Sapphire nitro+
PSU: EVGA 750 GQ
Chassis: Zalman Z7 Neo
OS: Windows 10

 

[Vic 40]

If you use the original molex cables from the EVGA 750 GQ with it should it just work. Might be better to contact EVGA support about this. Would like to give more options, but it doesn't make sense that the hub doesn't work with this particalr series of psu's.

 

[Mixo Maisuradze]

If you use the original molex cables from the EVGA 750 GQ with it should it just work. Might be better to contact EVGA support about this. Would like to give more options, but it doesn't make sense that the hub doesn't work with this particalr series of psu's.

Yes I do use original cables, tried several of them, even the ones that came with Supernova, EVGA doesnt seem to be responding for some days.

 

[Vic 40]

EVGA doesnt seem to be responding for some days.

Give them some time.

 

[Mixo Maisuradze]

This seems silly but after a very long trial and error problem resolved.
Seems like it was the molex cable that was somehow incompatible with this EVGA GQ PSU and I dont know how they ended up in the package.
I was looking through all the cables in my multiple boxes and found ones that were slightly different then the ones I had been using. And also at the end of the modular clip it said GQ
and the ones I had bee trying had written GS-B.

Works fine with original EVGA GQ cables. So just make sure the cables are for the exact same model and not its EVGA brother/sister.

 

[Vic 40]

And you are sure you used the original from the first place ....