Audio Buzz

[Lamaman1971]

Hi Folks, I’ve a niggley issue I’m hoping someone has dealt with before. My audio has a buzz - continually when the DC is switched on. Regular sound comes through perfectly.

I’ve tried
DC to Scart cable - via OSSC to TV audio
DC to Composite cable direct to tv speakers
DC to Scart with audio directed to external speakers (two sets)

I am a bit stumped. I’ve cleaned the connectors, two different TV’s and Speakers.

Starting to look like a fault with the Dreamcast?

[lozz]

Sounds like it could be feedback caused by both your DC and your speakers being plugged into the same power outlet/source. From what I understand it's a common problem.

I had this issue and found a ground loop feedback isolator helped. Just a cheap gizmo that plugs into your audio jack.