Hi Alberto,
This is almost certainly a ground loop issue. Take a look at these videos.
The second video is most appropriate.
You will need to unplug everything and start again. Pay close attention to how the power cables are connected.
Hi Alberto,
This is almost certainly a ground loop issue. Take a look at these videos.
The second video is most appropriate.
You will need to unplug everything and start again. Pay close attention to how the power cables are connected.