Speakers making high pitch noise

Robbie_G_83

Distinguished
Dec 29, 2011
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18,510
Hi

My speakers started making a high pitch noise when switched on.

Thought they were broken so got some new ones - the high pitch noise is still there

Any ideas what may be causing this?

Thanks
 
In a PC, sometimes the wiring, the data cables and the power cables are incorrectly tied together.
This causes data noise to bleed into the audio. Separate the wiring inside the PC and see if it can be arranged so that the noise goes away.
I have seen this happen before, and after separation of the wiring, the noise stopped.