In dash Radio repair?

[Foose04]

Not sure what the heck actually happen, but putting my sub box back in the truck yesterday and some how got an arc when installing the speaker wires into the amp. Radio was on low (dumb I know) Not sure if wires touched or what, but now every speaker is making loud humming sound. Only way to stop it is disconnect RCA's.

I think it's the indash because I have one amp for highs, one for sub and when I remove the RCA the humming stops to that speaker.

In dash is a Pioneer premier x90, couple years old.

Thoughts on what happen? Fixable or was that a 500+ dollar arc?

[PapaBear]

Pioneer has a fuse inside that protects the main board from frying. When it goes the RCAs are not grounded anymore. One solution is to take a long strip of bare wire and wrap around the RCA jacks and ground it to radio chassis. Google pioneer RCA fuse.


http://i612.photobucket.com/albums/tt205/buddy_dane/pico.jpg

[Foose04]

Well thats kind of good news! I want to say my unit had fuses in the back, but I haven't pulled the unit yet to take a look. Any chance that fuse would be external?

[Foose04]

I got google at work, I'll update the thread if it's a fix. Thanks again for the info.

[PapaBear]

Nope it's internal an called a pico fuse. The external ones are probably fine if the radio still powers up. I need to do this to mine too, spent some time researching it last week.

[Foose04]

Yeah it turns on and seems fine, just very loud horrible humming sound.

[PapaBear]

Does the noise change with RPM?

[Foose04]

Trucks at the house, I'll check it on lunch (@work)

[04ctd]

this may help, but I doubt it.

Ground Loop Isolator
http://www.radioshack.com/product/index.jsp?productId=2062214

basically, only the signal is transferred, no physical contact.

http://www.google.com/#hl=en&sclient=psy-ab&q=ground-loop+isolator+rca+cable&oq=rca+isol&gs_l=hp.1.2.0l2j0i8j0i8i30.2781.6616.0.8596.10.9.1 .0.0.0.145.1048.0j9.9.0.les%3B..0.0...1c.1.dSzGEyn o1l0&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=c3ab0d16a2c0aa6e&biw=1359&bih=858

[Nysrodo]

Pioneer cheap speakers (http://www.robustbuy.com/microphone-speakers-speakers-c-317_603_635.html) has a fuse inside that protects the main board from frying. When it goes the RCAs are not grounded anymore. One solution is to take a long strip of bare wire and wrap around the RCA jacks and ground it to radio chassis. Google pioneer RCA fuse.


http://i612.photobucket.com/albums/tt205/buddy_dane/pico.jpg

My pioneer sound system does producing buzzing sound. What could be the reason behind it? I have checked the fuse there is no problem.

[PapaBear]

There's a tiny fuse INSIDE the radio that you can't get to. It's called a pico fuse. Google it. Common issue with pioneers newer models.

The picture you quoted is a commonly used solution to the issue. About to do the same thing to mine this weekend.

[LXtasy]

if you have an aftermarket amp/sub combo, sometimes running the rca's along side the power wire will cause the buzzing sound.

[dkbmxer002]

Have you tried running a different set of RCA's? Does it do it with both amp outputs?

[bwelch]

My system just started making a rumbling noise like it's thundering when the volume is on 0. Any suggestions? I think I'm going to start with a new rca's. I hope its not my in dash messing up

[slowgreen99]

Yeah rca's ran near or with the 12v supply will make a buzz sometimes. Run them on oppopsite sides of the vehicle.

[dkbmxer002]

Also make sure the vehicles factory wiring isn't running with the rcas. do the typical process of elimination if you have an extra set of RCA's amp etc..