humming sound

[tjjohnson91 10+ year member]

alright i have two mojos ran by a mmats d300hc mod and my deck is a Deh-800prs.....i tried changing the RCA's it does the same thing........you pull the rca's out and they stop making the sound.... you can turn the gain all the way down and it is still there... on the deck and can turn sub off and it still makes the noise....what do you think it could be?

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[x1le 10+ year member]

sounds like the infamous pico fuse prob. to me...

 

[tjjohnson91 10+ year member]

what is that?

a bad fuse?

 

[kraudio12 10+ year member]

did you try switching the rca and check them on the back of the HU

 

[dbeez 5,000+ posts]

you are going to need to ground the rca's or send it in to have the pico fuse fixed internally..

 

[tjjohnson91 10+ year member]

yea i switched them it does the same thing..........

 

[tjjohnson91 10+ year member]

is that were you take a wire and wrap it around the rca's and touch it on the chassie?

 

[x1le 10+ year member]

you are going to need to ground the rca's or send it in to have the pico fuse fixed internally..

troof.

View attachment 26516407

 

[tjjohnson91 10+ year member]

well i dont have rca's like that so how else would i fix it?

 

[x1le 10+ year member]

just try and ground them. Create a connection between the outer casing of the rca's and a ground. Just take peice of wire, strip it back, wrap one side around your rca's and touch the other side to ground to see if it helps the problem.

 

[tjjohnson91 10+ year member]

Do I have to ground it at the deck or can I ground it at the amp?

 

[x1le 10+ year member]

@ the deck. It's not the rca's themself causing the problems, it's the rca inputs on the pioneer.

 

[tjjohnson91 10+ year member]

Well Shit. BC on mine it is wire to the rca connection. You have to ground it to the deck.

 

[tjjohnson91 10+ year member]

Do I have to ground them all or just the one I'm useinh

 

[tjjohnson91 10+ year member]

Do you ground all of them or can I just ground sub