Need a little more info from you. Does the system have an amp? If no sound out of speakers did you check to see if you possibly blew a fuse? If the system seems to turn on and no sound from speakers then you will probably want to slide the unit out and see if everything is hooked up and check for continuity from where the speaker wire plugs into the unit back to where it hooks up to the speaker.
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Need a little more info from you. Does the system have an amp? If no sound out of speakers did you check to see if you possibly blew a fuse? If the system seems to turn on and no sound from speakers then you will probably want to slide the unit out and see if everything is hooked up and check for continuity from where the speaker wire plugs into the unit back to where it hooks up to the speaker.