I was driving along when all of a sudden my whole systems starts poping and hissing and then everything cuts out. I shut it off and checked everything over to make sure it was all good, no issues. When I turn it on now I get really loud electrical whine through my stereo, lights, wipers, defrost,ac so on. I checked all my grounds they are good, grounded the deck and everything and it still does it. I tried another 4chn amp with new rca cables and it still does it. I tried hooking my laptop to the amp directly and it works perfect with no issues so I am thinking it is my deck which I hope not since that Premier Pioneer cost some good coin. Any way I can test my deck to see if it is the problem?

 

Common problem with pioneer head units. The ground trace burns. Just ground the chassis of the head unit and should be fine

 

chassis of the deck was already grounded, all connections are good and new rca's are on there but it still does it. Off my laptop it works great but off the deck i get pooping and whine plus my amps get hot fast.

 

Ground the RCA shields to the chassis of the head unit. this involves wrapping a wire around the Shields of the RCA's

 

Thank you kind sir, I am now back to 100% whine and pop free ..... Time to pound that sound