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Discussion Starter #1
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I have a 2012 Mazda 3i. I mistakenly reversed the poles when installing a new battery and blew the main fuse, the room fuse and the TCM. After replacing those fuses the car would start but I am not getting any sound through the speakers. The radio seems to be working (the tuner shows stations and I can change them) and Bluetooth still connects. How do I determine whether the amplifier is blown? Is there a chance that some other fuse or computer malfunction is keeping it from working? Don't want to replace it if I don't have to.

Thanks
 
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