Speaker are humming

[bernie]

Hi,
I tried various speakers on my PC, but all are humming.
just came from the States and use a transformer, but tried
diffrent ones with no positive result.
Can anyone help?

TIA

Bernie

 

[Nick Burns]

Do you have a mic and is it muted. Are all none used inputs muted.

 

[V Green]

Move the transformer as far as possible
away from your PC/cabling and work area.

It may be that your AC outlet into which your xfmr is
plugged is not properly grounded...