Is It Possible To Convert A 3 Pin 40mm Fan Into A 2 Pin Fan?

Discussion in 'Hardware' started by superstar, Jan 22, 2009.

  1. superstar

    superstar Major-Superstar

    Good evening,



    I have a usb hdd enclosure that uses a 2 pin 40mm fan. The problem is somehow the fan has become quite loud overtime. Though it has it's moments when it stays quiet for hours, and than out of nowhere it'll start to whirl very loudly. To my surprise I found a brand new 3pin 40mm fan which I had purchased as a replacement for a video card fan years ago, but never used.

    So I'm considering three options:

    1. Apply oil to the old fan

    2. Somehow convert the new 3 pin fan into 2 pins

    3. Purchase a new 2 pin 40mm fan for a better price than what's available on ebay! [Jeez they cost close to $20 on there with shipping to Canada]

    Questions:

    1. What brand of oil/amount should I apply to the old fan in order to see if it starts working correctly again, and where?

    2. Is it possible to convert a 3 pin fan into 2 pins? If so how can I do so?

    3. Do you know where I can buy a new 2 pin 40mm fan for a good price with shipping to Canada? [Btw I only use Paypal to shop online]






    Thank You


    P.s.
    I can take a picture of the new fan I have in my possession and post it if needed.
     
  2. Maxwell

    Maxwell Folgers

  3. superstar

    superstar Major-Superstar

    Ahh thank you my good friend! I had forgotten about 3 pin to 2 pin adapter cables on the market. But after looking at it clearly I noticed one thing... THE 3RD PIN ISN'T EVEN USED ON THE ADAPTER CABLED AS YOU CAN SEE IN THIS PICTURE:

    [​IMG]

    So it is essentially a "dummy" pin just to clap an actual 3 pin connector head, in order to run the only two used cables [black and red wires], giving it a two pin head. So well yeah, in essence the 3rd pin isn't used, isn't converted, or joined with the black and red wires at all.

    So rather than purchasing an adapter cable online, and waiting for it in the mail. I had an epiphany and took the faulty 2 pin 40mm 12volt fan out of my external hdd enclosure, and dismantled the 2 pin plastic white head off the black and red wires. I made sure to mark the position of the wire colors on the plastic white head slot holes before doing so with a red and black permanent pen, so not to confuse myself with my next step. I than grabbed the new [unused] 3 pin 40mm 12 volt fan I had stored away and also dismantled the 3 pin plastic white head off the black, red, and the 3rd yellow extra wire. I simply connected the black and red wires from the new fan onto the old fans 2 pin plastic white head, rolled up the 3rd yellow extra wire to the side [covering the end of it with electrical tape]. I connected the fan back in the external hdd, turned it on, and PRESTO IT WORKS LIKE MAGIC! NO NOISE, NO NEED TO SPEND MONEY.

    IT'S A RECESSION EVERYBODY! LOL...

    NOT FOR LONG SINCE OBAMA'S IN TOWN. :cool


    Thanks for the tip though, and a word of advice to anyone who ever finds this thread through google trying to find a solution to the same problem. Please do not try doing this unless your absolutely sure you can handle this task and are ready to deal with the consequences of ruining your equipment or causing a fire. Also notice the fact that I replaced the fan with one that carries the same voltage. & when you take the white plastic head off you've gotta push the metal connectors down to unlock it, and push them back up before attaching it to a new head otherwise they will not stay in place properly.



    BUT UMM... ONE QUESTION. This can't start a fire can it? [Just making sure]
     
    Last edited: Jan 23, 2009
  4. hrlow2

    hrlow2 MajorGeek

    Don't believe that it would since the unused end was taped, but let us know if it does so we don't try it. Seriously don't think you need to worry.
     
  5. GCWesq

    GCWesq MajorGeek

    No, no fire. And here's some more good news... I think you have just invented the wire-less!!!

    :-D:-D:-D:-D:-D

    LOLLOLLOLLOLLOL

    roflmaoroflmaoroflmaoroflmaoroflmao

    :tas:tas:tas:tas:tas
     
  6. superstar

    superstar Major-Superstar

    :major Lol at the post above. Thanks guys!
     
  7. Colemanguy

    Colemanguy MajorGeek

    Third coord is used usually for temperature/rpm monitoring data on fancyer fans/setups :) not needed.
     
  8. jlphlp

    jlphlp Master Sergeant

    Hi All,

    A little clarification: The third wire is to control the speed or the on time of the fan. If no 3rd wire is provided then the fan should run full time.

    Good luck, Jim
     

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