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Thread: Replacing PSU fan A4000

  1. #1
    tekk's Avatar
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    Default Replacing PSU fan A4000

    Hiya,
    Does anyone know a good tutorial on replacing the A4000 PSU Fan?

    What are the needed dimensions anyway? How big is it. It's so noisy...already heard that the airflow/pressure output is important because of the design of the case.

    Thanks.

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    Half-Saint's Avatar
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    That should be straightforward. The fan is probably 80x80 mm. You can quickly confirm that by opening up the power supply and measuring it yourself. You can also check, if the cable is soldered directly to the PCB or not, at the same time.
    My main rig is a 386DX-40

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    Yes, it's an 80mm fan. 12V. Can't remember if it's soldered directly to the PCB but I think so.

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    tekk's Avatar
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    Thanks. I'll check it.

    What about the Noctua fan? Seen here (https://youtu.be/2HJCK2SexSE?t=383) in an A2000 PSU fan replacement by Jan Beta. He has the Noctua NF-A8 ULN edition. It's a series of three where the ULN edition is the quietest.

    ULN: 10.4dB - 1400 rpm
    FLX: 16.1 dB - 2000 rpm
    PWM: 17.7 dB - 2200 rpm

    https://noctua.at/en/products/fan
    Last edited by tekk; 13th May 2019 at 23:34.

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    Half-Saint's Avatar
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    I would get the FLX because of a much larger airflow. Sure it's not as quiet as ULN but it will still be much quieter than your stock fan.
    My main rig is a 386DX-40

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    Yes, that's what I did. Thanks for confirming that

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    Amibayer! Skyrunner's Avatar
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    Here's what I did with an Acid Blaster which is more or less silent.

    Click image for larger version. 

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  8. #8
    tekk's Avatar
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    Nice, thanks for sharing The fan will be in tomorrow.

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