Question about Pioneer DEH-P3900MP CD Player

2 Answers

RCA Pre-Out Making Producing a Mumming and a Popping Sound.

The unit sounded o.k. for during the first six months of use. Just recently, mostly when I first start the car the subwoofers connected to the amp starts to hum and pop in a rhytum. I tried new RCA cables but that didn't work. I have a 2002 Nissian Altima. The humming sounds simular to ground loop, but my ground cables to the amp are of proper gage and are no longer than 20 inches. Is it because of the negative ground factory speakers that came with the car ?

Posted by on

2 Answers

If you have this humming sound, try to ground the rca to your car body ground. that will do the trick...

Posted on Jul 11, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,224 Answers

The speakers hook to speaker wires not to any thing else no power no negative poles do you have a remote shut off switch connected to amp this would be important to cut off amp

when cut off amp if you still here the humming this can be an indicator of low power being produced by alternator alternators produce 14 anything below 12 would mean replacement of alternator

if alternator fine then you need to find new ground for amp and make sure you have a good ground for sterio this can be checked with a test light
to check a ground all you do is hook gator clip to power then touch test light end to ground on radio end light comes on got a good ground (make sure not to touch any other sterio wires just the ground wire while connected to power to check grounds)
if pulsing in test light on the ground means you have a bad ground
just disconnect move to better ground

check the amp ground the same way as decribed above

Posted on May 09, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why do my pitco fryer have excess soot and keep making a loud popping sound.


Hi There.
Check and ensure that the unit receives correct gas pressure during operation as written on nameplate; make sure that the unit also has the correct orifice size for the type of fuel currently used.
Regards.

Sep 14, 2014 | Pitco Frialator Kitchen Appliances -...

1 Answer

My Sunfire MKll is making a popping/rattling sound during some low frequency notes, the sound is coming from the left woofer when facing the amplifier board ( its the softer woofer of the two, but...


The passive radiators on those are notorious for coming apart inside and making a knocking noise. You can sometimes glue it back together but youll have to remove the driver from the cabinet.

Jul 30, 2012 | Sunfire True Sub MK II Subwoofer

1 Answer

Mixer is still going but making a popping noise. Also has a burning smell - maybe a wiring problem?


HI.When the stand mixer produces a popping sound during mixing this problem has something to do with the motor.Motor has bossing on it.This might not be lubricated well and eventually lossen up.That's why it produces a popping sound.And with regard to the burnt smell might be on the coil of the motor's rotor or armature.Is the unit still functioning eventhough you smeeell burnt wire?Thank you for choosing FIXYA..

Jul 22, 2011 | Kenwood KM305 Stand Mixer

1 Answer

The freezer side of this unit quit freezing. Everything is thouging out. Fridge side isn't as cold as it used to be. Both controls have been set on factory recomemded settings since install. I keep...


A popping noise? Could it be the clicking of a relay? There is a relay that activates the compressor that could cause a clicking sound if it doesn't hold. A popping sound could be a bad capacitor but normally isn't a continuous popping sound, unually only one pop.

If the unit is only 4 monthes old it should still be under warranty and you should call it in for repair.

Jun 16, 2011 | Refrigerators

1 Answer

My amana dryer is not turning .it is making a mumming sound


Hi,

There can be many reasons why your dryer will not start or turn...

The most common causes are the belt breaking or jumping off, or the motor goingbad...

Here are a couple of tips that I wrote will help you to figure out why yourdryer will not run...

Dryer Repair - The Dryer is not Turning

Dryer Repair - The dryer will not start


heatman101

Mar 25, 2011 | Amana Dryers

1 Answer

Outside Unit blowing air but not cooling and slight buzzing sound


The compressor is not coming on and some part of that unit has failed. Do you hear any clicking sounds along with the buzzing sound? Recommend that you shut the unit down (remove power from it) until a service tech can listen to it try to start up.

The power company-installed load management system is probably a red hearing. That system will either fully turn off the unit or allow it to turn on/start up.

May 08, 2009 | Heating & Cooling

1 Answer

Humming sound


the old color wheel on models pre 06 have bearings. The new replacement dosn't. The noise you here is the bad bearing. Mine got so loud I couldn't take it anymore. Just replace and noise is gone! I did mine myself. Not that hard.

Dec 21, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

Tv has sound but no picture


my rca hd model hd50lpw164 has no picture. some sound and a electrical popping noise.
supect the lamp is out.
where can i obtain new lamp and whats the cost.?
david

Nov 20, 2008 | RCA HD50LPW165 50" Rear Projection HDTV

1 Answer

Poppng sound and flashes on screen


The Blu-Ray will not cause this problem and in my experience the popping or arcing is coming for the ysus, zsus, or one of the buffer drive bds. When I hear this complaint it is normally not long until a loud pop is heard and the unit will go dead. Most times the ysus bd fails, sometimes the zsus bd and sometimes both.

Feb 09, 2008 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Snap crackle pop


Check the Flyback, had same problem, replaced it and the unit worked good.

Oct 15, 2006 | RCA P46921 46" Rear Projection Television

Not finding what you are looking for?
Pioneer DEH-P3900MP CD Player Logo

278 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pioneer Car Audio & Video Experts

Michael Kovalik III
Michael Kovalik III

Level 2 Expert

117 Answers

The Knight
The Knight

Level 3 Expert

70983 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Pioneer Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...