Another Cooling Question

bluroadsterbluroadster
edited January 2007 in Hardware
HP Pavilion Slimline, pretty certain the power supply cooling fan crapped out, because it appeared the supply then overheated and shut itself down. Upon removal and powering it up separately, the power supply looks like it still works but the fan doesn't operate. So here's my question(s): sourced a 70mm evercool fan, but like most I found, it's got a 3 terminal connector-- red, blk, and blue. My old fan just had red(pwr) and blk(gnd). If I cut/splice the old connector onto the new fan (or maybe just un-pin it, assuming the pins are compatible), will it run with just the red and blk connectors? how can I make it run otherwise? Meanwhile, the power supply chassis installs snug right up against the top/side of the cpu case. Even though there's a cut-in grate in the power supply chassis for the air exhaust, it blows right into the side of the case; in other words, not much room for air circulation. Is it worth it to drill cooling holes into the case adjacent to the power supply fan and install a filter for protection? The stock configuration only lasted 11 months. Thanks...

Comments

  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited January 2007
    bluroadster wrote:
    HP Pavilion Slimline, pretty certain the power supply cooling fan crapped out, because it appeared the supply then overheated and shut itself down. Upon removal and powering it up separately, the power supply looks like it still works but the fan doesn't operate. So here's my question(s): sourced a 70mm evercool fan, but like most I found, it's got a 3 terminal connector-- red, blk, and blue. My old fan just had red(pwr) and blk(gnd). If I cut/splice the old connector onto the new fan (or maybe just un-pin it, assuming the pins are compatible), will it run with just the red and blk connectors? how can I make it run otherwise? Meanwhile, the power supply chassis installs snug right up against the top/side of the cpu case. Even though there's a cut-in grate in the power supply chassis for the air exhaust, it blows right into the side of the case; in other words, not much room for air circulation. Is it worth it to drill cooling holes into the case adjacent to the power supply fan and install a filter for protection? The stock configuration only lasted 11 months. Thanks...

    You do not need the blue on fan harness connected. That is for motherboard CPU fans and sometimes other fans connected to motherboard. It is an RPM feedback wire which is very rarely used in power supplies other than for setups where redundant power supplies are used (in some servers).

    As for the other wires:

    Blue connects to Black
    Red connects to Red
  • bluroadsterbluroadster
    edited January 2007
    Straight_Man wrote:
    You do not need the blue on fan harness connected. That is for motherboard CPU fans and sometimes other fans connected to motherboard. It is an RPM feedback wire which is very rarely used in power supplies other than for setups where redundant power supplies are used (in some servers).

    As for the other wires:

    Blue connects to Black
    Red connects to Red

    Hey thanks, but wait... is it blue that's extra, or black? You mention blue connects to black above...
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited January 2007
    it's got a 3 terminal connector-- red, blk, and blue
    Splice (and solder, if you can) red to red and black to black. In this case, the blue wire is not necessary - RPM signal wire. Usually that third wire is white.

    SAFETY: Ensure your PSU has been disconnected from the wall power for at least half an hour before opening it. Many PSUs have capacitance and can hold a charge for quite a while.
  • bluroadsterbluroadster
    edited January 2007
    Super, thanks. I'll get on it and let you know.
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