When I turn off my PC I hear coil whine coming from the PSU

[SibUniverse]

Is coil whine bad? should I get a new PSU? I can only hear the whine when my PC is powered off, I don't really know what to do about it.

[SupaKomputa]

Nah, probably the fan is dry or dirty, you can just give some lubrication inside the fan.

[Guest]

3 hours ago, SibUniverse said:

Is coil whine bad? should I get a new PSU? I can only hear the whine when my PC is powered off, I don't really know what to do about it.

So you know what coil whine is, I'm assuming you've Googled it, and you're still going to ask if it's "bad".

1 hour ago, SupaKomputa said:

Nah, probably the fan is dry or dirty, you can just give some lubrication inside the fan.

WHAT?!?!?

 

Did you even read his post????

[SibUniverse]

3 hours ago, jonnyGURU said:

So you know what coil whine is, I'm assuming you've Googled it, and you're still going to ask if it's "bad".

WHAT?!?!?

 

Did you even read his post????

I couldn't find anything about coil whine happening while the PC is turned off, I could only find mostly people talking about coil whine coming from the GPU.

[Guest]

7 hours ago, SibUniverse said:

I couldn't find anything about coil whine happening while the PC is turned off, I could only find mostly people talking about coil whine coming from the GPU.

What PSU is it?

 

The PSU is actually off, as in the switch on the back is switched off?

 

Or is the PC "shut down", as in, the PSU is still on, but the PC is in standby?

 

If it's the latter, does it ONLY make the noise when the PC is in standby?  Or does it actually do it all of the time?

 

And coil whine in a PSU, GPU, etc. is all the same thing.  It's this:  https://en.wikipedia.org/wiki/Electromagnetically_induced_acoustic_noise