Question about Car Audio & Video
Recently my GM-7300M amp stopped working ive checked all my fuses and wires and found nothing wrong with it. My wife bought it and had it installed at best buy and now a year later it wont work.
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 on both terminals is 12v or higher, the amplifier may be in need of repair.
Let me know if you have any other questions.
Posted on Aug 09, 2008
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Posted on Jan 02, 2017
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