Hello, I recently bought an used Citroen C4 in an excellent condition, but I have a problem with it's current head unit.
It is a Sony aftermarket head unit. It can't receive or detect any radio stations. I managed to pull it out and all cables are well connected as well as the antenna. It works when playing music using an AUX cord, music on USB and CD.
When the volume is on the maximum it is only static noise except on certain frequencies on which I can hear quiet music or some kind of rhythm.
I am wondering what is the problem, the head unit itself, or the antenna.
Any help is appreciated. Thanks in advance.