Take a short piece of 18 wag wire, at the head unit touch the wire to the deck chassis and then touch to the outer part of the RCA while it's plugged into your deck, make not of the results, the take the same piece of wire and youth it to the negative terminal on your amp and touch the other end, while both deck and amp are on, to the outer part of the RCA at the amp and let me know what happens with the noise

 

Blown the fuse, burnt a trace, etc. NEVER do that. People don't think it's a big deal fooling with their RCAs when the system is on, but it's a bad idea...

 

Yeah, I was thinking of trying that but I have to take the HU out of the dash, which will be a pain.

I've tried another source through different RCAs and the noise stops, so it's definitely the HU.

I'm just curious about one thing, and I hope someone can answer it.

Is it possible that the pico fuse inside my HU popped even though I can stop the noise when I turn my high beams on? If it's the fuse, servicing the HU or replacing it will be expensive and I REALLY want to avoid that route.

I will try that. So I do this while the deck and amp are on, right? When the humming actually happens?

Yeah, I was never forewarned about this. You live and you learn.

 

Yes with the hum doing what it does

 

Well ladies and gentleman, that was the problem.

mommjomma, I did what you said and the noise completely stopped.

So I guess I burnt a trace or popped a fuse in the headunit, which is really an unfortunate situation. I will never play with live RCA cables again.

The question is, what do I do now?

How safe is this fix?

I don't want it to be a fire hazard. I also heard you can ground only one channel and it will be fine. Thoughts?

 

This is not a fire hazard - some decks just have a horrible grounding..even this may not be enough.

JR

 

Yes you can ground only one channel and be fine. The outer shield of the rca connector is in common with all the other outer shields of all the other rca connectors. This is a solution to the problem yes, the fix is a proper repair at the service depot.

 

Hopefully it will be.

Thank you very much.

I agree with you on the long term solution for how much will it cost? My service rep. said it would be cheaper for me to buy a new deck than to get it fixed.

I forgot to ask, is it okay if my battery is connected while I ground the RCAs to the HU?

 

Your welcome, repairing the deck is a waste of money, just solder the wire onto the outside of 1 RCA cable end and ground it and your done

 

Excellent, that sounds great.

I really appreciate everyone's help in the thread. Thank you!