Help

[LarryJohn]

I have a 04 330 ci convt. recently my FM and CD player will not operate. When I turn on the radio and try using the FM or CD I get a loud squeal ( real loud ), nothing else. I thought it was the amp, not so I tried 2 other HK amps and had same squeal. My Navi voice and the AM work fine just problem with the FM and CD.

Where do I go next to bring back my Classic Rock?:mad:

[el_duderino]

The amp shouldn't be able to tell the difference between those two sources. I fear the HU has gone south.

[LarryJohn]

OK I am not sure, what is the HU ? Thanks for the help.

[el_duderino]

Head unit. The in-dash source unit.