Lately, as in the last couple of weeks, I've had some strange thumping from my Alpine MRD-M301 and the Alpine SCS-1042D. I bought an adapter on eBay for my RCA-outs (although I could've made them myself, didn't learn how until later). I did the installation myself.
This happens whenever the car is started. A few seconds later, whether or not the radio is on, it randomly thumps. It can last from 2 to 10 seconds. If the radio's off, turning it on doesn't make a difference.
What are the symptoms of this and what can I do to fix it?
This happens whenever the car is started. A few seconds later, whether or not the radio is on, it randomly thumps. It can last from 2 to 10 seconds. If the radio's off, turning it on doesn't make a difference.
What are the symptoms of this and what can I do to fix it?