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Thread: really irritating sound coming from my psu

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    Default really irritating sound coming from my psu

    Hey Guys!

    I've this really irritating sound coming from my psu and its really doing my head in. Imo, its too loud to be coil whine but i could be wrong.

    Made a short 1min clip to show you (turn up the volume): https://youtu.be/_4-I7tMRRB0

    My PSU is a 750 Watt be quiet! Power Zone CM Modular 80+ Bronze, bought new in February of this year. Is it defective or is this normal because i honestly cannot stand this... since i build the pc to be as quiet as possible (its in my bedroom).

    Any advice?!
    Thanks in advance!
    Last edited by Jon Gerow; 11-01-2019 at 09:16 PM.

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    First I would want to ask you if you're certain your outlet is grounded.

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    Hey man!

    Last night i did some more testing and basically took apart the system since.. lets say, i overdid the cable management a bit
    I'm now 99.9% certain that it's actually the fan. I put a pencil between the blades to stop it and the sound immediately stopped. So yeah, it appears to be just a faulty fan bearing.

    I'll RMA the psu and get a new one!

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    Weird. I wouldn't expect the fan to be spinning for such a long time after turning the PSU off.

    I was actually thinking a PFC coil buzz or an x-cap discharge.

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