SS3170 Audio System

[LTRVing]

I have a 2013 3170DS. The in-dash audio system provides AM/FM, Satellite Radio, Audio CD, Plays DVD's to different TV's in the rig, GPS, iPod input and other audio inputs.

The main TV in the Coach has stereo audio outputs to this device as AUD2, if I select this function, the TV audio will play through the house speaker system, which has a few different settings to select different speaker combinations.

The issue I'm having is that if I select Aud2 for the TV, it does play the TV audio through the system, but there is a annoying hum that I have identified as coming from the AM/FM system and is playing over the TV audio. If I mute the AM/FM audio the TV audio cuts out and the TV audio only comes from the TV speakers not the house system. If I have the AM/FM on a station and activate the Aud2 for the TV, the AM/FM station plays over the top of the TV audio.

I have the books on this unit, they don't help at all. Any idea if I'm missing a setting or something? Thanks, your help is appreciated.

[B and B]

Hello,

There is most likly a ground loop.

PYRAMID NS20 15 AMP CAR AUDIO RCA NOISE FILTER SUPPRESSOR ISOLATION TRANSFORMER | eBay

This will eliminate the Hum.

[LTRVing]

Got it thanks, worked perfectly, hum is gone.