Annoying noise in new PSU

New Home Forum Getting Started Annoying noise in new PSU

This topic contains 5 replies, has 4 voices, and was last updated by Profile photo of Matt saeger Matt saeger 1 month, 3 weeks ago.

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #19027
    Profile photo of James Donnelly
    James Donnelly
    Participant

    I recently installed a 30A 12V LED power supply to my printer so I can add a heated bed.

    It has the annoying habit of switching the fan on full every time current draw reaches a certain threshold.

    At the moment, with only the steppers and the hot end drawing power it’s coming on and off every few seconds.

    Anyone else have this?

    #19032
    Profile photo of Barry
    Barry
    Participant

    I know the power supply that runs my 3d printer will cycle the internal fan when the heated bed is running, so it’s normal.

    #19064
    Profile photo of James Donnelly
    James Donnelly
    Participant

    Fair enough, thanks. Hmm, maybe I’ll try a PC PSU mod – the noise is quite annoying.

    #19075
    Profile photo of vicious1
    vicious1
    Keymaster

    It should just be a very slight fan noise, if you are hearing something else maybe its rubbing on something in there. Unplug it and open it up.

    #19085
    Profile photo of James Donnelly
    James Donnelly
    Participant

    I might resort to that. Perhaps try a replacement higher quality fan.

    #19115
    Profile photo of Matt saeger
    Matt saeger
    Participant

    Yeah those things are loud the one I had on my 3D printer was very loud too. I opened it and the fan said it took a weird voltage like 16 volts so I didn’t try and replace the fan. I modded a corsair atx power supply and to use and it is silent. I ended up using the LED strip power supply on the MPCNC which I only use as a router outside so fan noise isn’t an issue.

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