I just bought my G37s 2008 coupe month ago. Everything works well without any issues except the speakers, when I turned on my car there's no sound from speakers after driving it for too long it works. And that still happens everyday and sometimes it doesn't work at all. Can I know if the problem with fuses or wires or amp? Please help ASAP because this is driving me crazy.

Thanks.

 

I'd say you have a loose connection or an amp issue but I doubt its a blown fuse or it wouldn't work at all.