Quick hardware question

Discussion in 'PowerPC Macs' started by Deville, Dec 12, 2010.

  1. macrumors member

    Joined:
    Oct 23, 2008
    #1
    Hi,

    One of my fans died on my G4 dual 1ghz. I took it out, got a new fan but I forgot which way it is supposed to blow the air. I put it in so it sucks air into the tower towards the processor, but I'm a bit unsure maybe it is supposed to blow the air out?

    I forgot to check before I pulled it out. Here is a picture, if someone could please confirm the airflow direction that would be great.

    Thanks.

    [​IMG]

    Uploaded with ImageShack.us
     
  2. macrumors 65816

    Dalton63841

    Joined:
    Nov 27, 2010
    Location:
    SEMO, USA
    #2
    I have never owned a PPC Mac, but most every tower blows air OUT of the tower, to suck the heat off the heatsink and out, instead of keeping the heat trapped in the tower.
     
  3. thread starter macrumors member

    Joined:
    Oct 23, 2008
    #3
    Yea, thats what I figured aswell, but it has a much larger fan to blow air out. Anyone know for sure? I'm about 80% sure that fan I have circled was sucking air in, but I could be wrong.
     
  4. macrumors 68000

    tom vilsack

    Joined:
    Nov 20, 2010
    Location:
    ladner cdn
    #4
  5. macrumors 68040

    666sheep

    Joined:
    Dec 7, 2009
    Location:
    Poland
    #5
    This guy is talking about B&W which has different fan direction (because it has only one fan).
    This is completely wrong for Quicksilver. In QS big fan sucks in air, small sucks it out.
     
  6. macrumors 68000

    4JNA

    Joined:
    Feb 8, 2006
    Location:
    looking for trash files
    #6

    just pulled a 2001 QS off the shelf, pulled out the fan in question from the rubber mount thingy, and verified the direction and flow from the arrow marks on the (stock) fan housing.

    first pic is correct. the fan in question blows air on the heatsink, so blowing air into the case. the big fan behind the hard drive pulls air out of the case, and the fan in the power supply pulls air out of the case.

    best of luck.
     
  7. thread starter macrumors member

    Joined:
    Oct 23, 2008
    #7
    Thank you!
     
  8. thread starter macrumors member

    Joined:
    Oct 23, 2008
    #8
    Hey guys one more question on this thing. Since I upgraded to a Radeon 9800 pro my temp is around 50 degrees, it used to sit at about 40 - 45.

    I noticed that the large fan, below the power supply isn't doing anything. Is this normal?

    Does it only kick on at higher temps or what? The other 2 fans are working fine ( one by the heatsink and one in the power supply ), but I'm just not sure about the big one, is it supposed to run all the time?

    Thanks
     
  9. thread starter macrumors member

    Joined:
    Oct 23, 2008
    #9
    ttt

    Can anyone verify if the big fan I'm talking about it supposed to run all the time? Thanks
     
  10. macrumors 6502

    Dave H

    Joined:
    Mar 2, 2008
    Location:
    California
    #10
    I think it is supposed to run all the time.
    It did in my G4 "Digital Audio" (one model older).
     
  11. macrumors 6502

    Joined:
    Nov 4, 2001
    Location:
    Philadelphia, PA
    #11
    That fan is supposed to be on all the time. I used to own a QS and it ran all the time.
     
  12. thread starter macrumors member

    Joined:
    Oct 23, 2008
    #12
    Thanks guys I guess it's dead then, it has never ran as long as I owned it. I hope it's only the fan and not something else.
     
  13. macrumors 6502

    Dave H

    Joined:
    Mar 2, 2008
    Location:
    California
    #13
    If you only need a fan, I can recommend one of these.
    I replaced my main fan with one more than 2 years ago and it has worked well. It moves more air than the stock fan and isn't any louder.
     

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