Pioneer manufacturing defect
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=84402
Printed Date: May 28, 2024 at 11:07 PM
Topic: Pioneer manufacturing defect
Posted By: Reeceddogg
Subject: Pioneer manufacturing defect
Date Posted: October 20, 2006 at 11:44 PM
I've recently been looking for a solution to my horrible feedback problem in my 03 taurus. After trying 10 or so different grounds and loop isolators i took the radio out. When bench tested i still had feedback in the form or popping through the speakers when the next track button was pushed or cd removed. I noticed that this went away when the rcas were removed from the h/u. thinking i just had a bad unit i tried this on another pioneer. and as soon as the rcas are connected you could see the subs moving with the volume on 0. Has any one else had this problem with pioneer or do they have any solutions before i sell my h/u.
Replies:
Posted By: haemphyst
Date Posted: October 20, 2006 at 11:54 PM
Pioneesr have horrendous gr4o0und plane... it is a manufactirugn edfect acrood the enitre manufavtruing li9ne... not uncommon asd ta all...
drunk, soffr!
Pioneers are crap producgts.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: KarTuneMan
Date Posted: October 21, 2006 at 12:01 AM
Hey Haem....have another...  -------------
Posted By: i am an idiot
Date Posted: October 21, 2006 at 12:22 AM
Your problem is not a manufacturing defect, Maybe an Engineering Defect. This is what has happened to your radio. (1) A power wire touched the outer shield of your RCA Jack. Or More than Likely (2) when installing your amp you connected Power then you connected your RCA jack before you connected the ground wire. At this point your amp was looking for ground and found it via your RCA jack. Some Brilliant Engineer decided to protect their radio with a 1/4 amp fuse on the shield of the RCA jack. They are the only ones that do this. Sad thing is that the only thing this protects their Radio from is the very rare situation that if the Transformer shorts in your amplifier it could put 12 volts on the shield of the RCA jacks. This is probably about 1/4% of all amp repairs yes about 1 in every 400. This is how you can temporarily fix your problem. You need to ground the shield of your RCA jack Yes Ground the outer part of your RCA jack. you can do this by soldering a length of small wire to any patch cord of your system then grounding the other end of it. Even if 10 other people here freak out and say you should never ground your RCA. It is supposed to be at ground. Please write back to let Us know if this helped you!!!
Posted By: haemphyst
Date Posted: October 21, 2006 at 1:32 AM
KarTuneMan wrote:
Hey Haem....have another...
my brohter is in toem... we do this often,.... LOL.. long live the hops! ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: BulletTooth
Date Posted: October 21, 2006 at 2:13 AM
Yep grounding the RCA outer sheild works all the time, I've seen this too often on Pioneers too.
Posted By: forbidden
Date Posted: October 21, 2006 at 6:09 AM
Ignore everything in this thread except for the Drunkorz posting abilities, haha, just what I needed to read after a long night of dealing with drunks........
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Top Secret, I can tell you but then my wife will kill me.
Posted By: Velocity Motors
Date Posted: October 21, 2006 at 9:40 AM
Yup Pioneer ground problem is poop. Your solution is to buy an Eclipse : )
This is coming from a Pioneer dealer myself !!
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: xtremej
Date Posted: October 21, 2006 at 12:08 PM
It is a pioneer problem, yes I have pioneers in stock . -------------
Posted By: Reeceddogg
Date Posted: October 21, 2006 at 6:59 PM
i am an idiot wrote:
Your problem is not a manufacturing defect, Maybe an Engineering Defect.
This is what has happened to your radio. (1) A power wire touched the outer shield of your RCA Jack. Or More than Likely (2) when installing your amp you connected Power then you connected your RCA jack before you connected the ground wire. At this point your amp was looking for ground and found it via your RCA jack.
Please write back to let Us know if this helped you!!!
I always ground everything before connecting the power, so i don't think that's the case. but the problem only happens when rca's are connected top the rear out or front rca output.
Posted By: i am an idiot
Date Posted: October 21, 2006 at 7:00 PM
Did you try grounding the outer part of your RCA cables?
Posted By: Reeceddogg
Date Posted: October 21, 2006 at 7:04 PM
not yet. i'm going to do that tomorrow. when you say outter part, what part of the cable are you refering to?
Posted By: i am an idiot
Date Posted: October 21, 2006 at 7:50 PM
the shiny metal part you can see when the cable is plugged into your radio or your amp. you can take a short length of wire ground one end to ground and strip a few inches off the other end then wrap the wire around the patch cord and twist it like a bread tie if this fixes your problem let me know and I can tell you how to repair the unit
Posted By: Reeceddogg
Date Posted: October 21, 2006 at 10:22 PM
That sounds like a good idea. I'm going to do that in the morning.
Posted By: Reeceddogg
Date Posted: October 22, 2006 at 11:51 PM
I did that and it didn't work. I did ground the chasis of the radio and the popping comming from the subs was very minimal. Any thoughts on that.
Posted By: BulletTooth
Date Posted: October 23, 2006 at 2:24 PM
Don't ground the chassis of the radio, you have to ground the outer part of the RCA cable. You it's a coax, so you have the inner and the outer cable which look like this (o) ground the outer part works 99% of the time for me.
Posted By: Reeceddogg
Date Posted: October 24, 2006 at 1:24 AM
Why not ground the radio? It made the feedback almost not noticable. I did the rca ground and it didn't work.
Posted By: DYohn
Date Posted: October 24, 2006 at 8:22 AM
Reeceddogg wrote:
Why not ground the radio? It made the feedback almost not noticable. I did the rca ground and it didn't work.
No reason. If it helped, leave it. Pioneer heads are notorious for this defect. I'd replace it if it was me... with a different brand. ------------- Support the12volt.com
Posted By: Reeceddogg
Date Posted: October 24, 2006 at 11:53 AM
I'm not up to date on eclipse but i've heard great things. Which one should i look into around the 300-400 price range
Posted By: midship93
Date Posted: November 02, 2006 at 8:01 PM
I am writing in response to i am an idiot's post regarding grounding the rca cables. I have a Pioneer DEH-P4600MP head unit... I have never had a problem with it until I recently tried installing it in my MR2. I think what happened was... My ground on my amp came loose because I didn't crimp the ring terminal to the ground wire good. Lesson learned... Always solder your connections. Anyway, I am in car stereo feedback, buzzing, whining, popping (you name it) hell.... I have regrounded and re-routed every wire in every possible way you can imagine. Anyway, to the point... I finally read the post about grounding the rca cables... I would've never thought of doing that. But, out of desperation, I tried it and I couldn't believe it actually worked. Thanks for getting me somewhere. I was beginning to give up. Well.. about 90% of it is gone. I can only here a slight buzz when the volume is off and it goes away as soon as I turn the volume up. Now to the question.... am I screwed and have to buy a new headunit or can I fix this sucka? You said something about a 1/4 amp fuse? can it be replaced or bi-passed? Or do I have to solder 4 ground wires to each coax shield? This sounds like an ugly band-aid. Anyway thanks for any additional info.... and thanks for getting me to this point.
Posted By: i am an idiot
Date Posted: November 02, 2006 at 9:26 PM
The fuse can be replaced but it does require that the radio be completely torn down. The fuse is mounted under the circuit board. It can be repaired inside the unit easily without tearing the unit apart. I need to know if your RCA jacks are panel mounted or if they are on the end of a short patch cord coming out of the radio? or maybe you have 2 pairs panel mounted and one patch cable. Let me know if you have panel mounted or patch cords coming out of the radio.
Posted By: midship93
Date Posted: November 02, 2006 at 10:05 PM
Thanks for the reply.... I have 2 sets front and rear chanels that are panel mounted. Here's a link to the manufacturers site for my headunit:
https://www.pioneerelectronics.com/pna/v3/pg/product/details/0,,2076_310069880_50410536,00.html Thanks again for your help.
Posted By: i am an idiot
Date Posted: November 02, 2006 at 10:36 PM
You will need a few inches of some very small wire 28 or 30 guage if you have an IDE hard drive cable laying around one of the wires in it will work great. Remove the top cover of your radio and look at the back side of your RCA jacks. On the side of the connector closest to the chassis of the radio there is a silver piece facing the edge of the radio. It goes from the top to the bottom of the assembly. You need to solder a wire to that and solder the other end to the top of the tuner assembly (it is the Vertical board near the side of the radio that has a metal frame around it). There is a little short leg that protrudes from the frame near the cd mechanism, it already has a little solder on it.
Posted By: midship93
Date Posted: November 03, 2006 at 7:44 AM
okay... I'll take a look at it tonight after work. I can come up with an old IDE cable. So, I'm all set on that. Hopefully, the instructions will become clearer once I open it up. I'll take some pictures of the procedure... and maybe post a step-by-step for everyone. I'll let you know how it goes... thanks a million!
Posted By: midship93
Date Posted: November 03, 2006 at 7:15 PM
Mission completed. It was a tight spot for soldering. I ended up taking it all apart (gutting out the cd mechanism). Mostly, because I didnt know what I was doing. After I was done, I realized I could've just popped the top plate off like you said. Anyway, it made it a little more accessible. I also took some before and after pictures of the insides. If anyone is interested in seeing it... let me know and I will post them for you. I plugged everything back into my MR2 and fired it up. A complete success!!!! I'ld buy you a beer or 2... or 3 if it were possible. Thanks again!
Posted By: i am an idiot
Date Posted: November 03, 2006 at 8:29 PM
Glad to help, I'll take you up on the beer.
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