Ok so I had a professional installer put a LED dash light and siren controller in my car because I am a volunteer firefighter. The stereo was working fine before hand. After the install the stereo and MFD powers up and appears to be functioning correctly, but there is no sound coming from any of the speakers. I have turned it up, down, off and nothing. I have tried the radio, cd changer and no difference. No bluetooth sound either.The 12v battery was disconnected for a while during the install, but NO factory wiring was altered, unplugged or anything like that. What could be the problem?
Well first, I would think the main problem would be..."The Professional Installer"...... I hate to suggest you bring it back to him....but.......??? I agree with Jelloslug, check power to the Amp...
