In dash Radio repair?

Foose04 · 09-16-2012, 09:20 AM

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 · 09-16-2012, 09:37 AM

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.

Foose04 · 09-16-2012, 09:43 AM

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 · 09-16-2012, 09:49 AM

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

PapaBear · 09-16-2012, 09:54 AM

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 · 09-16-2012, 09:59 AM

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

PapaBear · 09-16-2012, 10:52 AM

Does the noise change with RPM?

Foose04 · 09-16-2012, 11:14 AM

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

04ctd · 09-16-2012, 02:33 PM

this may help, but I doubt it.

Ground Loop Isolator
http://www.radioshack.com/product/in...ductId=2062214

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

http://www.google.com/#hl=en&sclient...w=1359&bih=858

Nysrodo · 03-27-2013, 11:54 AM

Quote:

Originally Posted by PapaBear

Pioneer cheap speakers 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.

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 · 03-27-2013, 11:57 AM

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 · 03-27-2013, 11:57 AM

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

dkbmxer002 · 03-27-2013, 11:58 AM

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

bwelch · 03-27-2013, 12:31 PM

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 · 03-27-2013, 01:35 PM

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

dkbmxer002 · 03-27-2013, 01:52 PM

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..

09-16-2012, 09:20 AM	#1
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	In dash Radio repair? 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? __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's Last edited by Foose04; 09-16-2012 at 09:23 AM.

09-16-2012, 09:43 AM	#3
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	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? __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

09-16-2012, 09:49 AM	#4
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	I got google at work, I'll update the thread if it's a fix. Thanks again for the info. __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

09-16-2012, 09:59 AM	#6
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	Yeah it turns on and seems fine, just very loud horrible humming sound. __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

09-16-2012, 11:14 AM	#8
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	Trucks at the house, I'll check it on lunch (@work) __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's

09-16-2012, 09:37 AM	#2
PapaBear Senior Member Join Date: Aug 2010 Posts: 2,809	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.

09-16-2012, 09:54 AM	#5
PapaBear Senior Member Join Date: Aug 2010 Posts: 2,809	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.

09-16-2012, 10:52 AM	#7
PapaBear Senior Member Join Date: Aug 2010 Posts: 2,809	Does the noise change with RPM?

09-16-2012, 02:33 PM	#9
04ctd Senior Member Join Date: Aug 2009 Location: Ladson SC Posts: 4,388	this may help, but I doubt it. Ground Loop Isolator http://www.radioshack.com/product/in...ductId=2062214 basically, only the signal is transferred, no physical contact. http://www.google.com/#hl=en&sclient...w=1359&bih=858 __________________ 1 Timothy 3:16 16 And without controversy great is the mystery of godliness: God was manifested in the flesh, Justified in the Spirit, Seen by angels, Preached among the Gentiles, Believed on in the world, Received up in glory.

03-27-2013, 11:57 AM	#11
PapaBear Senior Member Join Date: Aug 2010 Posts: 2,809	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.

03-27-2013, 11:57 AM	#12
LXtasy Senior Member Join Date: Dec 2006 Location: Summerville, SC Posts: 9,564	if you have an aftermarket amp/sub combo, sometimes running the rca's along side the power wire will cause the buzzing sound. __________________

03-27-2013, 11:58 AM	#13
dkbmxer002 Moderator Join Date: Jan 2007 Location: orlando/charleston/savannah/D.C. Posts: 2,265	Have you tried running a different set of RCA's? Does it do it with both amp outputs? __________________ white 90's ls single cam nitrous hatchback

03-27-2013, 12:31 PM	#14
bwelch Senior Member Join Date: Aug 2009 Posts: 3,774	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 __________________

03-27-2013, 01:35 PM	#15
slowgreen99 Senior Member Join Date: Jan 2008 Location: Summerville Posts: 7,740	Yeah rca's ran near or with the 12v supply will make a buzz sometimes. Run them on oppopsite sides of the vehicle. __________________ M.R.E. Bad Bob Motorsports

03-27-2013, 01:52 PM	#16
dkbmxer002 Moderator Join Date: Jan 2007 Location: orlando/charleston/savannah/D.C. Posts: 2,265	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.. __________________ white 90's ls single cam nitrous hatchback