Amp Blown/shorted?
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=75863
Printed Date: July 12, 2025 at 3:24 PM
Topic: Amp Blown/shorted?
Posted By: mardigrastexan
Subject: Amp Blown/shorted?
Date Posted: April 07, 2006 at 7:42 PM
I'm having an issue with an Alpine MRP-F240 amp. Seems to have been working earlier today, but now I'm getting nothing out of it. The power light is on and the fuse is not blown. If I have a short inside would the light and fuse still be good? My rca's are good so that's not the issue. What else can I check? Thanks.
Replies:
Posted By: mardigrastexan
Date Posted: April 07, 2006 at 7:51 PM
Let me add something. I noticed that two channels had dropped out and then later on two more dropped out.
Posted By: DYohn
Date Posted: April 07, 2006 at 8:22 PM
Sounds to me like your amplifier fits the highly technical descirption "fried." Is it still under warranty? ------------- Support the12volt.com
Posted By: mardigrastexan
Date Posted: April 07, 2006 at 8:25 PM
Nope, no warranty...3 years old. My thoughts were it's fried, too.
Posted By: forbidden
Date Posted: April 08, 2006 at 12:13 PM
The amp was watching you the entire time, each time that it saw that you were occupied driving, it released a little more of it's magic smoke that made it work. To me as well, it sounds like it has gone to the old amplifiers home in the sky. Too bad as nobody likes to have an amp die on them. On the other hand, woohoo, shopping time for new car gear....
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Posted By: tcss
Date Posted: April 08, 2006 at 12:33 PM
Before I would send this to amp heaven I would do a simple test. Disconnect all 4 speakers and reconnect one at a time. If the amp comes on for each individual speaker, but shuts off for only one you could have a blown speaker or shorted speaker lead and the amps protection circuit is kicking in. This amp does not shut off the indicator light when it is in protection mode.
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