Seasonic S12II-620 PSU buzzing sound?

naseem142

Honorable
Jan 30, 2015
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Hello,
Recently my trustworthy PSU just started making buzzing noises from the back, And i just accidentally heard it when i was plugging in something from the back.
The sound isn't as sharp as a "Coilwhine" , it's like quite deeper and meaner, As if you can hear the electricity running. I don't know if that makes sense, just trying to describe it.
And this sound only emits when the PC is on, no matter what i'm doing, idling , gaming , watching a video etc.
What i tried doing:
I tried moving away the aux cord that's coming from the speakers away from the power cable, but i can still hear the sound.
Next i tried plugging in the power cable from the PSU into a different outlet alone. But nothing changed.

Even though my PC feels like it's functioning normally, i am quite worried it might be faulty. should i replace my PSU? is this a risk to my other PC components?
I hope you can help me out, Thanks!
 

nzalog

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Jan 2, 2017
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I've had this issue with my seasonic fanless a while ago... it was pretty terrible. I later found out that the ground wiring in the room I was using it in was faulty. You may want to find a way to check that but if that's not the case seasonic is really good about RMA replacements for this issue.

I doubt coil wine would cause any issues to your components it's just annoying and that's it.
 

naseem142

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Jan 30, 2015
122
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10,680


i recorded a bit of it, but it's not accurate sound for some reason, the "tr r r r r r r" is at a bit higher "ticks" per second or frequency but the sound pitch is accurate. ( sorry english is not my first language )

And i made sure it's not the fan, i cleaned it out of dust and after a good luck it seems the sound is coming close from the power cable where it's plugged in, which as you mentioned might be something to do with ground.

https://www.youtube.com/watch?v=Z5gUfheCjyI