Question about Pioneer DEH-P3500 CD Player

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Pioneer DEH P3500 car tuner: low output fr Rt Rear channel

Pioneer DEH P3500 car tuner/cd: low output from right, rear channel. Connect different tuner to harness, RR channel fine. Not a balance or fader control problem. Seems like mosfet pal 7000a IC amp chip output would just operate or fail, not give severely reduced output on one. Other possible component failure? Capacitor(s)? All solder joints are good, no signs of baked parts. Problem occured suddenly without prior signs of trouble. Whuddup? -G in AZ

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  • gkelly106 May 10, 2009

    Looking for a specific answer from a bench technician. I'd like to hear from someone who has a working knowledge of this problem and the likely fix. I've eliminated all of the simpler control, contact and continuity issues. Thanks for the response. -G

  • gkelly106 May 10, 2009

    Now that's what I'm talking about! Excellent answer Iversh. I'll let you know what works. -one happy customer

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  • Master
  • 1,197 Answers

It's very rare for one channel to fail leaving the others in perfect working order. It's possible but rare.

To determine if the problem is the IC or something before the IC, you would need a scope or a signal tracer (something that will allow you to hear the signal on various test points). I've used one of the Radio Shack mini-amplifiers. It's simply a battery powered amplifier with a small speaker. I'm sure that something similar is available from Maplin or a similar dealer. You would use that or a scope to check the level of the signals going into the power amp IC.

The subwoofer output has dedicated outputs from the electronic volume control IC. The rear signal from the volume control IC goes only to the rear channel inputs of the power amp IC.

You'll have to trace the signal to determine whether it's the volume control IC or the power amp IC. There are 2 capacitors in series with the signal line. They could be defective AND that would likely cause the signal to be low 
If you haven't done so yet, you may want to connect a speaker directly to the head unit's harness (after disconnecting the speaker wires going to the rear of the vehicle). A short to ground could be causing the problem. The chip should shut down completely in case of a short but high resistance in the speaker wire could prevent the protection circuit from engaging.

Did you run new wires or did you use the OEM wiring? If you used the OEM wiring, there may be an OEM amp in line causing the problem.


C317, C318 near the power amp IC.

C222 is a bypass cap and would only cause a problem if it was shorted, leaking or the wrong value.

R250 is a 100 ohm resistor. If it's not properly soldered, the wrong value or defective, it could possibly cause the output to be low.

Be aware that one slip of the meter probe can lead to catastrophic damage. If you damage the volume IC, you will not likely be able to replace it yourself. The copper on the board is VERY easy to damage. With luck, the input levels on all 4 inputs of the power amp IC will be equal.

From the layout, it looks like the caps are surface mount devices. If so, do not try to replace the caps. Head unit circuit boards are not very robust. If you are not extremely careful, you will damage the board and it may be very difficult to repair. There's no point in replacing anything that is not defective.


HOPE THAT FIXED UR PROBLEM
THANK YOU HAVE A NICE DAY

Posted on May 10, 2009

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  • Master
  • 8,619 Answers

Hi

As you have already checked your cd player but would also like to confirm have you checked the wiring of the player if its fine as it could also be due to loose wires. If thats not the case then its definetly the IC that needs to be replaced.

Please do accept the solution and revert for further assistance.

Thanks
Rylee

Posted on May 10, 2009

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1 Answer

Nee a wiring diagram for a Pioneer DEH-P3500 for a chevy s-10 pick up


1993 Chevrolet S10 Blazer Car Stereo Radio Wiring Diagram.

Radio Constant 12V+ Wire: Orange
Radio Switched 12V+ Wire: Yellow
Radio Ground Wire: Black
Radio Illumination Wire: Gray
Radio Dimmer Wire: Brown
Radio Antenna Trigger Wire: Pink
Radio Amp Trigger Wire: N/A
Front Speakers Size: 4? x 6? Speakersir?t=modilife-20&l=as2&o=1&a=b00009uhre
Front Speakers Location: Dash
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green
Rear Speakers Size: 6? x 9? Speakersir?t=modilife-20&l=as2&o=1&a=b00009uhre
Rear Speakers Location: Side Panels
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue


http://www.modifiedlife.com if thats not your year.They have all years all makes&models

Mar 06, 2011 | Pioneer DEH-P3500 CD Player

1 Answer

I LOST THE CONNECTIOS ON PIONNER DEH-2100 HOW I KNOW THE RIGHT CONNECTIONS


Red - Power - Connect to Acc on ignition or battery positive. Connected to Battery the unit will not power down when the ignition is switched off
Yellow - Memory back-up. Connect to battery positive
Black - Connect to vehicle earth or battery negative
Blue/white - Used to power up remote power amplifier or power antenna. Do not draw more than 300mA at 12V from this line
White + White/black - Front left channel
Grey + Grey/Black - Front right channel
Green + Green/black - Rear left channel
Violet + Violet/Black - Rear right channel
Use the wire with the black line in it for negative on any channel.
Do not earth any speaker wires.
RCA output jacks are used to send the output from the unit to an amplifier if you have one and cannot be used to power a speaker.

Dec 29, 2010 | Pioneer DEH-2100 CD Player

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Speaker wire specs for front and rear on the pioneer deh-p580mp


white fr left +

white/black fr left -

grey fr right +

grey/black fr right -

green rear left +

green/black rear left -

purple rear right +

purple/black rear right -


hopes this helps

pls rate

Aug 17, 2010 | Pioneer Premier DEH-P580MP CD Player

1 Answer

I have a Pioneer DEH-P6400 head unit. I need a wiring diagram so i can reinstall it.


the standard radio diagram is

yellow 12v battery

red 12v accessory

black earth

blue/white amp rem

blue power antenna

white fr left +

white/black fr left -

grey fr right +

grey/black fr right -

green rear left +

green/black rear left -

purple rear right +

purple/black rear right -

that should help u

Aug 13, 2010 | Pioneer DEH-P6400 CD Player

1 Answer

I need help getting wiring diagram for pioneer deh-p3500


red wire accessory/keyswitchpower.yellow battery/constant power.black remote used for amplifiers.gray with black is negativeright front gray is positive.white with black is netative left front and white is positive. green black is negative left rear and green is positive.violet black is negative right rear and violet is positive .

Jun 03, 2009 | Pioneer DEH-3400 CD Player

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Pioneer DEH-P3500 CD Player has power and no sound


output chip on internal amplifier fried. Check & use RCAs for proper signal and/or seek service.

Dec 21, 2008 | Pioneer DEH-P3500 CD Player

1 Answer

Pioneer deh-p3500 memory wire color


12V Battery, Memory/Constant wire Yellow

FYI:
12V Accessory Wire Red
Ground/Chassis Wire Black
Left Front Speaker, Positive (+) White
Left Front Speaker, Negative (-) White w/Black Stripe
Right Front Speaker, Positive (+) Grey
Right Front Speaker, Negative (-) Grey w/Black Stripe
Left Rear Speaker, Positive (+) Green
Left Rear Speaker, Negative (-) Green w/Black Stripe
Right Rear Speaker, Positive (+) Purple
Right Rear Speaker, Negative (-) Purple w/Black Stripe
Remote Out, Power Antenna Blue
Remote Out, Power Amplifier Blue w/White Stripe

Apr 21, 2008 | Pioneer DEH-P3500 CD Player

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