Buzzing noise

[Pinchhitter]

Starting today I have been getting a buzzing noise. I am using HDMI cables and an HDMI switcher. I do not get buzzing audio noise with my PS3 which is also hooked in to the same switcher via HDMI cables, nor with any other tv inputs. Anyone encounter this, like i said it just started this afternoon.

 

[Pinchhitter]

Ok it seems to be gone now. I did a reset and it appears to have cleared up.