Red protection light
Rca wire are hooked yp to my radio but when i hook them up to my nitro bmx 2000 watt amp the red light blinks and the sounds stops from my car speakers and when i unplug the sound comes back also my amp isnt turning one... do you think you could help me?
Car Audio & Video - Nitro - BMW-482 Car Audio Amplifier
Answers & Comments
If the amp is going into protect mode, it probably has shorted output transistors. To eliminate other possible problems, do the following.
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 almost certainly has shorted output transistors and will need to be repaired.