Question about Car Audio & Video
Everytime i connect the output rca of the headunit to the input of the poweramp red light is on and green light on when there is no connection,
I have a earthquake d3 and the power light is on and the thermal light is on and all of sudden the system went out and came back on with the power light on with the car off. What could be the problem
Posted on Mar 28, 2010
This is normally a grounding problem in the amplifer. If you have a volt meter, check the voltage at the ground of the RCA input on the amplifier. If that voltage is anything more than just a few millivolts then you have a problem in the pre-amp of the amplifier. You should also only connect or disconnect the RCA jacks while the system is off. Otherwise you can get a loud popping noise that can damage the amp or the speakers. Check that voltage on the amplifer RCA jacks with the head unit not connected to the amp with the RCA cables, then if that is OK, check the RCA cables coming from the head unit. You may even have a voltage on those RCA's coming from the head unit, in which case, you have a problem in the head unit. You will be looking for a DC voltage, if you have anything more than just a few millivolts (0.070 +/- DC volts) on either of those then you have found the cause. After that, it will require a technician to be able to troubleshoot the amp or the head unit to determain why you have that DC voltage where it should not be.
Let me know if I can be any more help,
Posted on Jan 23, 2009
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Posted on Jan 02, 2017
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