Modding PSU fan....hhhhhmmmmmm

Discussion in 'Modding' started by v0id, 14 Mar 2002.

  1. v0id

    v0id What's a Dremel?

    Joined:
    2 Mar 2002
    Posts:
    600
    Likes Received:
    0
    ok, i recently replaced my PSU fan because it was not putting out enough air, so i put in a fan i knew was decent only to find out it doesnt do any better of a job..... im thinkin maybe cause i have a 90mm fan right by it that its suckin a lot of the air out there, and...... durrrrrr..... i dunno what to do, cause its not pushin much air out....
     
    v0id, 14 Mar 2002
    #1
  2. sobriquet

    sobriquet What's a Dremel?

    Joined:
    4 Jan 2002
    Posts:
    177
    Likes Received:
    0
    I would suggest adding the fan you took out to either the bottom or the back of the PSU...
     
    sobriquet, 14 Mar 2002
    #2
  3. TwiSteD LoGic

    TwiSteD LoGic What's a Dremel?

    Joined:
    1 Nov 2001
    Posts:
    176
    Likes Received:
    0
    what direction is your new psu pushing the air (into or away from the processor)?

    Because you have the other fan right there I would suggest having your CPU fan suck air and shoot it away from the heatsync.
     
    TwiSteD LoGic, 14 Mar 2002
    #3
  4. UnLoadeD

    UnLoadeD What's a Dremel?

    Joined:
    2 Jan 2002
    Posts:
    865
    Likes Received:
    0
    The leads on my psu fan went to a small circuit board in there. When i spliced a second fan onto same wires, both seemed to spin really slow. I'm geussing that theres not a full 12v going to the fan. I tapped into the unsed P4 connection to get the 12v for my second fan. You might try to do that for your new fan. If you know for sure its getting 12v and still not putting out any air, you should start looking for something restricting the airflow.
     
    UnLoadeD, 14 Mar 2002
    #4
  5. sobriquet

    sobriquet What's a Dremel?

    Joined:
    4 Jan 2002
    Posts:
    177
    Likes Received:
    0
    i had a little circuit board like that in my old antec PSU, i think it might be a variable speed controller that changes the fan voltage according to the temp, when both fans were in, they only needed to spin really slowly to keep below the set temp the circuit board was trying to maintain...
    just a theory though
     
    sobriquet, 14 Mar 2002
    #5
  6. v0id

    v0id What's a Dremel?

    Joined:
    2 Mar 2002
    Posts:
    600
    Likes Received:
    0
    i think the problem is its not gettin the voltage that it needs to get the fan movin like it should... i think im gonna go to the local comp store and buy a 80 fan with a 3 pin connector, drill a hole in the side of the PSU and run the wire to the mobo, or wire a 4 pin out of it to get my full 12 v.

    Is it hard to wire a fan into a unused P4 cable??? can someone direct me to where i can find out how easily without doining any harm (i dont plan on using a P4 connection anytime soon - or ever..) so i dont care if i kill the p4 connection, but mind as well use it if its just gonna sit there....
     
    v0id, 14 Mar 2002
    #6
  7. macroman

    macroman The One

    Joined:
    3 Sep 2001
    Posts:
    1,859
    Likes Received:
    9
    It is very likely the fan is temperature controlled by a sensor inside the PSU. This is very common even on cheap generic supplies. If this is the case then the fan should only run as fast as the PSU says it needs to. (Assuming the control circuit is working). If you want to add a second fan then this may be of interest. http://www.bit-tech.net/article/44/
     
    macroman, 14 Mar 2002
    #7

Share This Page