Troubleshooting amp

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=77408
Printed Date: May 15, 2024 at 1:29 AM

Topic: Troubleshooting amp

Posted By: mobilesndfx
Subject: Troubleshooting amp
Date Posted: May 07, 2006 at 6:12 PM

I installed an Alpine MRP-F240 amp today. It played perfectly for a few hours, now at half volume it stops playing. It goes on and off about every 5 seconds. Do I have a wiring short, or a bad amp?

Replies:

Posted By: pss5075104
Date Posted: May 07, 2006 at 7:38 PM

what are the speakers you have hooked p, and the ohm loads of each speaker?

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D

MECP First Class Certified Installer.

Nothing is impossable, it's just more expensive.

Posted By: mobilesndfx
Date Posted: May 07, 2006 at 8:02 PM

Alpine 4 ohm speakers. Im positive I have everything wired correctly.

Posted By: forbidden
Date Posted: May 07, 2006 at 10:14 PM

Disconnect the subs and turn the amp on again. Is it still going into protection.? Yes, disconnect the RCA cables and test again? Yes, ensure you have a good ground and test again. Yes, ensure that you have +12v on the remote on line by testing the wire when it is disconnected from the amp. If the wire tests fine and the ground is fine, hook the wire back to the amp again. Next check the fuse at the battery. If all is well in the above checks, then the amp is fubar. If the issue goes away when the speaker wires are unplugged or the rca cables are unplugged, then those wires need to be checked for shorts or being clinched under something. This will send an amp into protection.

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

Posted By: mobilesndfx
Date Posted: May 08, 2006 at 11:03 AM

Thanks, found the problem. Ended up being my lack of skill with a soldering iron LOL