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I have a mrd-1005 amp and the cooling fans are not turning on

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Maby the cooling fans need replacing
or its not hot enough for the fans to cool the AMP down

Posted on Jul 19, 2008

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My alpine Mrd-1005 has been best amp ever. But the other day it all of a sudden started blowing fuses on the amp and the current protecter mode kicks on.. as long as I keep volume down in works but as soon...


make sure there is equal amps on the fuse under the hood and at the amp...also make sure to never mount your amp to anything metal....wood only! hope this helps, mine did the same thing

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So I have two alp mrd 501 amps one in each car both amps shut down ( clips ) while driving I have rolled back the setting still happons ?


Well it sounds like the safety switch is turning on. Which means it turns off. If you could clarify that would be awesome and i'm sure i or someone else could answer you better

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1 Answer

Over heats


Hi the over heat will be a result of the fan not running. Most likely the fan itself is faulty, however could be the control also. (more likely fan). Make sure the fan is not being stopped by dirt etc, if you have a tester you can check and see if there is voltage at the fan (when the amp is hot), if there is, replace or seek someone that can assist.
Best of luck

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How to get amp status to come up on the screen of alpine d 310


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1 Answer

Mrd-m1005 amp fans not never turned on?


the fanns will come on around 75c they are preset 60 is not that hot for an amp but the cooler you can keep it the better it sounds

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1 Answer

Alpine mrd-m500


Hi SPDGOD,

 

Could not find exact, but close manual.  It is the MRP-M450 mono block amp from alpine.

 

Go to this url and view in Adobe. Print it if you need to

http://vault.alpine-usa.com/products/documents/OM_MRP-M450.PDF

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1 Answer

No sound from the amp


Make sure that your amp turn on wire is connected from behind the radio to your amplifier. Usually the turn on wire is a blue wire but it can be any. This blue wire connects from the blue/white wire behind the radio to your small connection turn on connector on the amps power connections. You have 3 ( 12V , Ground, Switch or the smallest connector)

 

Also check the amplifiers fuses, and the main powerline fuse as well. If this doesnt work then write back to me.

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2 Answers

Over heating


you trouble shoot the problem by opening unit and force-powering fans to test for overheating during "being used loud for a few minutes". Read the fans' label for proper voltage to apply and proper polarity. I am guessing the fans will run on car battery voltage of 12 volts. Also, attempt to close up the unit to simulate real conditions. There should not be fuses for the fans. If unit is now cooling, then look for faulty thermistor, which turns the fan on during rising temperature. Once thermistor is located, a fast test is to "jumper" its two wires to simulate turn on.

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