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    Old 06-22-2013, 03:46 PM
    marvluslf marvluslf is offline
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    Default PSU issue?

    The past week ive been getting a humming noise coming from my pc, its a low 3 second'ish drone followed by silence and it repeats like this all the time. I'm not sure if it's my pc case or the psu but today I heard a faint crackling/electrical noise from mains power connector that plugs into the back of the psu. I firmly pushed it in and it stopped but after a short while it does it again. Am I possibly looking at a psu replacement?
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    Old 06-22-2013, 04:59 PM
    fatcobra fatcobra is offline
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    The first thing you describe could be some sort of vibration from the case, be it the movement of a fan turning & vibrating a removable cover for a DVD/RW etc... that's a bit loose. Or maybe a case/back plate screw coming loose etc... so maybe worth investigating that, or a stray cable that maybe hitting a fan as it spins, cables with stickers on, sometimes can hit the fan as well.

    The electrical noise doesn't sound good. Could be the power cable socket on the back of the PSU is loose. It maybe worth just making sure the screws holding the PSU in place aren't coming loose. Also look to see if anything is poking out of the PSU fans that shouldn't be.

    Does the power cable feel as though it is in snugly (while not forcing it) ?

    If you do smell electrical burning at any stage, turn off the PC ASAP.
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    Old 06-22-2013, 05:55 PM
    marvluslf marvluslf is offline
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    Problem solved. After running the pc without the dvd drive and the psu outside of the case it turns out the noise was coming from the hdd's not being screwed in tight enough. As for the psu connector it feels tight but could be tighter, may try another connector and see how that does.
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