Amp Power Cables Wired in Reverse Polarity

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=145548
Printed Date: May 09, 2025 at 3:45 AM

Topic: Amp Power Cables Wired in Reverse Polarity

Posted By: damofinefidelit
Subject: Amp Power Cables Wired in Reverse Polarity
Date Posted: July 30, 2019 at 1:57 AM

I connected the power inputs in reverse and my amplifier made a popping sound and smoke came out is there a chance I can save the amplifier?

Replies:

Posted By: damofinefidelit
Date Posted: July 30, 2019 at 2:01 AM

It's a Response cat.AA-0435 4x100wrms mosfet power amp

Posted By: i am an idiot
Date Posted: July 30, 2019 at 8:15 PM

If it was properly fused it would not have hurt it much. There is a diode across power and ground, this is known as a reverse polarity protection diode. It may have only shorted that diode and burnt a trace on the circuit board. Have you opened it up to see if you can see what may have smoked?

Posted By: damofinefidelit
Date Posted: July 31, 2019 at 7:59 PM

I found that two mosfets the center terminals have become disconnected from the pcb and two ceramic components have also become disconnected as well if I could send pics of these components I would

Posted By: DYohn
Date Posted: August 04, 2019 at 12:49 PM

Replace it.

-------------
Support the12volt.com

Posted By: forbidden
Date Posted: August 04, 2019 at 2:05 PM

If the magic smoke that makes it work has been released, you 100% need to replace the amplifier.

-------------
Top Secret, I can tell you but then my wife will kill me.

Posted By: damofinefidelit
Date Posted: August 06, 2019 at 2:05 AM

Thank you

Posted By: damofinefidelit
Date Posted: September 30, 2019 at 7:27 AM

Thanks mate will try that out is there any reason one of the legs on a most amplifier chip would have blown off the pcb

Posted By: i am an idiot
Date Posted: September 30, 2019 at 3:05 PM

Because you connected it backwards with too large or no fuse.

Print Page | Close Window