Stereo/Dvd player audio humming

[therink]

Hello
Does anyone know of a quick fix or where to purchase and where to install an inline a noise suppressor for the cheesey OEM audio system in my Outback?
I get loud interference (buzzing) when ceiling vent fan is running and also a slight noise from what I think is the converter fan. The interference is quite annoying.
Thanks

[depshrink]

My Laredo does the same thing. Maybe someone has a solution!

[fireballux21]

Have you checked to make sure that the ground point on the radio is good?

A loose ground can cause humming in electronics.

[therink]

I've pulled it out and looked at the wires. I thought everything was OK. Ill check that out again and post my findings.
Steve

[hankpage]

I'm not sure on newer trailers but on the old converters there was only one or two "clean" dc outputs for electronics. When I installed a car radio in the bedroom I got an ac hum from the circuit I tapped into when on shore power. I was able to eliminate it with a Line Choke from Radio Shack. Do you only get the hum when connected to shore power or all the time. As mentioned above check all grounds first.