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Thread: Daisy Chained Led fan problems

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    Default Daisy Chained Led fan problems

    sorry for the odd first post but Ive searched everywhere and cant find a similar isue and all my electrician friends havent responded. I am in the process of liquid cooling my case. I am setting up the radiator and the intention was to daisy chain the fans to have one lead power them. I finished one side and basically what i did was matched the 3 wires from each fan and put them in the end of a crimped butt splice, so obviouly there are 3 of these. Then on the other end of the splice i put the lead matching the same wires to the ones on the other end and crimped that. Now when I plugged it in to the 3 pin molex adapter coming from the psu that is powering the case fans all of the 3 fans light up but only 1 spins. I have tried it in the plug for 3 different fans all coming from the psu and not the motherboard which should supply more than enough power for 3 fans in a chain. any ideas?

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    Default Re: Daisy Chained Led fan problems

    WELCOME TO PUROC.. . I am sure someone has a answer for you.

  3. #3
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    Default Re: Daisy Chained Led fan problems

    Found this hope it helps


    keep in mind the +12 on a power supply 4 pin molex connector is the YELLOW wire if you do decide to splice the fan wires directly into the power supply wire harness (use soldering techniques or small wire nuts, etc.) so the red from the fan will go to the yellow on the power supply wires, black to black.


    And to add, don't connect the yellow wire on the fan to anything. That's a RPM sense.


    Fan --- PSU
    Black --- Black
    Red --- Yellow
    Yellow --- (not connected)
    Blue --- (not connected) <--- 4-pin fans.

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    Default Re: Daisy Chained Led fan problems

    Thank you foe helping him Vinman.

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    Default Re: Daisy Chained Led fan problems

    I'm not at home at the moment I'll have to double check when I get back but if the wires weren't correct wouldn't they not light up or spin? Because they all light up and one spins full power. So they must be getting power no?

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    Default Re: Daisy Chained Led fan problems

    thank you for the reply i found it... one of the wires in the middle got crossed... problem solved all spinning all lit.

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    Default Re: Daisy Chained Led fan problems


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    Default Re: Daisy Chained Led fan problems

    And Vinny in for the Win!! Rock on sir! and WELCOMEto POC!

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    Default Re: Daisy Chained Led fan problems

    Quote Originally Posted by Steveram View Post
    thank you for the reply i found it... one of the wires in the middle got crossed... problem solved all spinning all lit.
    It happens to the best of us just glad I could help, Welcome aboard Steve

    Now pull up a chair and stick around for awhile and join in on the fun with the rest of us.

  10. The following user thanks vinman For this above post:

    Cyberburnout (23-01-2014)

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    Default Re: Daisy Chained Led fan problems

    Quote Originally Posted by vinman View Post
    It happens to the best of us just glad I could help, Welcome aboard Steve

    Now pull up a chair and stick around for awhile and join in on the fun with the rest of us.

    Nice find Vin. Sometimes the simplest answer is the right answer.

    Steve

    Now why didnt you use a simple fan controller instead of your approach?
    "If you got it, Build it"

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