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Helpful ReplyWeird issue with PWM fan hub

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bg8780
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2018/08/28 08:47:36 (permalink)
I'm having the strangest issue with this hub. The description and many reviews I've read say this should have no issues with up to 8 fans. I'm using less than 8
I have the hubs 4pin plugged into the motherboards CPU 4 pin header. I then have an EK 360mm Phoenix kit plugged into the first "glossy" port and 3 EK RGB Vardar fans plugged into the remaining three ports on the hub.
 
My issue is when I plug in the 3 Vardar fan. The fans on the EK Phoenix kit as well as its pump completely shutdown. As soon as I unplug the last RGB Vardar everything goes back to normal. No matter what hub port I use, the Phoenix kit shutsdown. I can do the Phoenix kit and 2 fans no problem. It's just that third fan that kills the pump and fans. This is the second hub as I thought the first may have just been defective.
 
​Picture to help visualize: https://ibb.co/msRptU (Imgur is apparently down)
 
Any thoughts?
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    ty_ger07
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    Re: Weird issue with PWM fan hub 2018/08/28 09:41:15 (permalink)
    If it isn't defective, it sounds like it has a design flaw. You should be able to attach a nearly infinite number of PWM fans to a PWM wire since it is a high impedance control signal. If some company can't get that simple operation working, it's garbage.

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    bg8780
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    Re: Weird issue with PWM fan hub 2018/08/28 10:32:34 (permalink)
    ty_ger07
    If it isn't defective, it sounds like it has a design flaw. You should be able to attach a nearly infinite number of PWM fans to a PWM wire since it is a high impedance control signal. If some company can't get that simple operation working, it's garbage.



    Can you recommend a replacement? I need to power and control these fans off one PWM header on the mobo. Not looking for anything too fancy.
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    Sajin
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    Re: Weird issue with PWM fan hub 2018/08/28 10:44:22 (permalink) ☄ Helpfulby bg8780 2018/08/28 11:15:34
    bg8780
    Can you recommend a replacement?

    http://www.swiftech.com/8-WayPWMsplitter-sata.aspx


    See my current build here: https://forums.evga.com/My-bench-rig-unlimited-power-m3596024.aspx
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    bg8780
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    Re: Weird issue with PWM fan hub 2018/08/28 11:15:40 (permalink)
    Sajin
    bg8780
    Can you recommend a replacement?

    http://www.swiftech.com/8-WayPWMsplitter-sata.aspx




    Thanks, just ordered one on Amazon.
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    Sajin
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    Re: Weird issue with PWM fan hub 2018/08/28 11:30:12 (permalink)
    No problem.


    See my current build here: https://forums.evga.com/My-bench-rig-unlimited-power-m3596024.aspx
    RTX 2080 Ti 4-way SLI?!?!: https://forums.evga.com/RTX-2080-Ti-4way-SLi-set-by-yours-truly-m2954756.aspx
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    bg8780
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    Re: Weird issue with PWM fan hub 2018/09/05 15:13:44 (permalink)
    Just as an update I wasn't able to solve this issue. I tried the Swifttech hub and it won't power the fans at all. Possibly DOA. I reached out to EK and they are stumped as well. 
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    XrayMan
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    Re: Weird issue with PWM fan hub 2018/09/17 22:04:17 (permalink)
    bg8780
    Just as an update I wasn't able to solve this issue. I tried the Swifttech hub and it won't power the fans at all. Possibly DOA. I reached out to EK and they are stumped as well. 




    Just replace at this point.

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