Question about Power Acoustik LT-980/2 Car Audio Amplifier

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Jxp720 no sound, light going red to green to red

I have had this amp for a few years now, now when it comes on it will go to a greed LED light, and then orange and red, back to green, with no sound, how can i fis this?

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  • 631 Answers

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp 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.

The following page can help you troubleshoot the problem if you want to try to repair it yourself.

Basic Amplifier Repair

Posted on Apr 11, 2008

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