Pioneer Premier DEH-p390mp winding noise, I need it gone!

[jkok7 10+ year member]

One of my buddies is offering to fix the problem for me. He said if do what yall suggested that it can mess up my ohm load and plus if I ever sell it that doesn't look too good. He said you have to take out the brain of the unit and he'll bi-pass that fuse. What do you think about that. I'm not being funny or anything, I just need to know what's necessary.

 

[boogeyman 10+ year member]

If you decide to open the head unit and repair the ground internally, do not use a large wire as a jumper. If the head unit uses a fuse between the shield and chassis ground, you must replace the fuse with the same type/rating. If the head unit simply allows a trace to open when voltage is applied to the shields, jump the open trace with a single strand of very small wire. I often use a 1 ohm 1/4 watt resistor. The 1 ohm resistor will generally open with no mess (no smoke/flames). To be safe, you should use a flameproof resistor.

 

[ciaonzo 5,000+ posts]

One of my buddies is offering to fix the problem for me. He said if do what yall suggested that it can mess up my ohm load and plus if I ever sell it that doesn't look too good. He said you have to take out the brain of the unit and he'll bi-pass that fuse. What do you think about that. I'm not being funny or anything, I just need to know what's necessary.

Your buddy is right and boogeyman has you well in hand. Here's a good read on this topic that will take the mystery and myth out of it all for you.

http://www.diymobileaudio.com/forum/diy-mobile-audio-sq-forum/13889-pioneer-rca-preout-noise-prevention.html

 

[mbrooky 10+ year member]

Thanks mane. Hey in that second option you show. Those two wires that you have hanging off each RCA cable, did you just ground the other end of the wire somewhere in your car?

you probably could but you want to ground it to the head unit itself, on the outer casing...any of the little silver screws holding it together. like in the first pic it's using the screw on the top left and lower right.

 

[jkok7 10+ year member]

you probably could but you want to ground it to the head unit itself, on the outer casing...any of the little silver screws holding it together. like in the first pic it's using the screw on the top left and lower right.

Thanks mane.