A new idea for fixing a ground loop.

[IDSkoT 5,000+ posts]

I have a Pioneer HU, and long story short my skateboard in my trunk took a whack at my RCA cables and tugged them out of my amp blowing my Pico Fuse...

I've tried the wire wrapping... but either I **** at it or it doesn't work too well.

The thing that displaces me is that it'll work right when I finish... But I guess due to the road vibration it starts again... very slowly it gets worse 'til I have to pop out my HU and fix it all over again.

I was thinking, can I strip the RCA's, pull out the negative, reroute it to a ground and then solder it back onto the RCA negative? I'm not sure if this would even logically work... I'm just getting desperate.

Another idea is drilling out a washer so that it will slide over the RCA in and act as a connector between the RCA cable and the HU. That's the basic concept behind the wire, at least.

I just need to fix this somehow so I don't have to keep going back and fixing it.

Click to read more...

 

[path2spl 10+ year member]

it should look like this...

 

[IDSkoT 5,000+ posts]

O_O What exactly is that?

 

[jrwalte 10+ year member]

You could just solder the grounding wire to the RCA shield to help it hold in place. Or if you're decent with a soldering gun you could bridge the gap between the two points of the pico fuse with a piece of metal to reconnect the ground on the RCAs. This is the best way to solve the problem, as it creates the ground at the source of the noise.

 

[path2spl 10+ year member]

You could just solder the grounding wire to the RCA shield to help it hold in place. Or if you're decent with a soldering gun you could bridge the gap between the two points of the pico fuse with a piece of metal to reconnect the ground on the RCAs. This is the best way to solve the problem, as it creates the ground at the source of the noise.

how would i know where the pico fuse is

 

[path2spl 10+ year member]

O_O What exactly is that?

thats wrapping the rca's so it fixes the ground noise

 

[IDSkoT 5,000+ posts]

how would i know where the pico fuse is

Google.

Isn't the pico fuse just a .1 farad resistor? Or something like that.

 

[jrwalte 10+ year member]

People have used resistors in replace of the pico fuse - the norm seems to be 1/4 ohm. The spot was too small for me to get the resistor to fit with the soldering gun I had, so I ended up cutting a small piece of the resistor leg and just soldering it over the pico fuse to join the two ends.

Check out this thread

http://www.diymobileaudio.com/forum/showthread.php?t=13889&page=6

 

[DidUHearThat? 10+ year member]

Yet another opportunity to bash Pioneer HU. I think people should stop buying them till they get this design flaw fixed.

 

[path2spl 10+ year member]

is that the fuse to the right of the blue things(D351)

 

[path2spl 10+ year member]

nevermind found it

 

[IDSkoT 5,000+ posts]

Yet another opportunity to bash Pioneer HU. I think people should stop buying them till they get this design flaw fixed.

When I bought it, I didn't know of this design flaw... so, /shrug. It's a good HU other than the whine.

So, once I fix it, I'll be 100% happy again.

And... if you just place a metal jumper over it, wouldn't that just put the rest of the mobo at risk? There's a reason there's a resistor there. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif