Question about Hifonics BXI 1606D Car Audio Amplifier
You are on the right track. It's not the amp, but it is the rca wires. When you have them plugged into the stereo, you can touch them together and it will make the same sounds you described also, though I don't recommend doing that! Rca wires can be weird sometimes but usually I replace them with new ones. Even a brand new set of cheap ones will do the same thing sometimes. The noise you here is causes by either a small short in the wiring, running the rca's to close to the power wire for the amp (or any other power wire for that matter), and sometimes you can buy a grounding kit for them that is fairly cheap that will help. Most of the time for me, it was just the connections, but replacing them basically took me through all these steps at once. Just remember, you still have a chance that your head unit is the cause by the connections getting old and wore out on the inside. Hope this helps!
Posted on Aug 05, 2010
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Posted on Jan 02, 2017
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Should the amplifier go into protect mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power ground and remote leads connected.
1. Now turn the amplifier back on, and if the diagnostic LED lights, the amplifier has an internal fault.
2. If not, plug the RCA cables back, and reset the amplifier. If it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.
3. If the amplifier seems fine with RCA cables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic
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