Question psu makes ringing high pitched sound conneted to power plug?

[momokh]

When the PC is off (but conneted to AC power), the PSU produces high pitched noise I can hear it when im close to PC just like (tinnitus sound).
I took the pc to a technician who said he couldn't hear anything and everything was normal, is it coil whine? is it a real problem or should I ignore it?

the sound please check it:

View: https://www.youtube.com/shorts/J9-VOkZAQQ4


the pc is hp brand i5 6eme
and i think is refubrished.

 

[Lutfij]

Try and relocate to another wall outlet and see if that changes your experience. You need to understand that the only thing that did change from your home to the technician, is the source of power, essentially your wall outlet.