I have a pioneer head unit componet speakers in the door a single 10" woofer in the back that's been blown for some time now and i have a 4ch amp under the driver seat which runs power to the componet speakers and then the power wire runs to a mono amp and a cap then the woofer. I think maybe a fuse may have gone bad but i'm not sure. The head unit still has power and i can turn up the volume, down the volume, change from cd to radio and everything, just no sound. Any suggestions on what it could be or what to look at? My amps are not getting any power now either....

 

Check all the fuses first...