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Nitro BMW 484 roofers stopped playing

I have a Nitro BMW 484 amp. The subwoofers stopped playing and when I checked it, I notice the led indicator light on the amp turn red from green. What is the causing the problem and how can I fix the problem. In other words, what should I do to turn the Indicator light back to green so that it can play again. I've tried to locate an instruction manual on the net, but to no avail. Any assistance will be highly appreciated.

Thanks.
MG

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With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.


If the voltage remains near or above 12v, disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Posted on May 15, 2008

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