Question about Pioneer DEH-P3500 CD Player

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Everything works the speakers are hooked up i just

Everything works the speakers are hooked up the deck says its playing i just have no sound ?

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  • 231 Answers

Connect one speaker at a time .If one speaker or speaker wire is bad it will cause all audio to mute.connect one speaker at a time

Posted on Jul 30, 2009

3 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

tech48
  • 624 Answers

SOURCE: No Sound

The audio not coming out from the speakers is normally the amp IC being bad.

If you have a bad speaker it could shut down the amp IC, but normally it will make the amp IC go bad if a speaker gets shorted.

Try disconnecting one speaker at a time and see if the sound comes back on any of the speakers. If so, you just found your bad speaker.

Or if you have a multimeter you can just check the speakers resistance. Each speaker should measure around 3.5 ohms to 4 ohms if it is normal.

Do the RCA jacks have audio? If you have a sub woofer connected to the radio, you would be able to hear the bass from it if the RCA jacks are working.

The reason I ask is, if you have no audio from the RCA jacks you may not have a bad amp IC.
You may have a bad electronic volume IC.

Are there any problems with the tuner locking in on stations?
The reason for this question is, the FM MPX is also part of the electronic volume IC.

If you plan on trying to repair it yourself, the first thing to check would be the voltage on the speaker outputs. If you have a voltage meter you would ground the black lead to the chassis of the radio or if the radio is still in the car ground it to the chassis of the car and then put the red lead on each one of the speaker leads. You can do this in the car at the speakers, but the radio must be turned on to check it. The speaker leads should all measure around 6.5 volts to 7.5 volts. When the output amp IC is bad one or more of the speaker leads will measure much less than 6.5 volts or much more than 7.5 volts.
If you have decent soldering skills this is an easy job to complete.

The part number for the amp IC is TA8273H
The easiest place to find it would be at a service center for electronics. If they don't have it they can order it for you from one of their distributors. Most service centers will do this for you. The one I work at does.

You will need to take the radio completely apart, the amp IC is the part that is screwed right up against the big heat sink on the back of the radio
.
If the amp IC is good and the electronic volume IC is bad, you will need to have excellent soldering skills to replace it. It is a surfaced mounted IC called a flat pack with 44 pins on it spread out around the 4 sides of the IC.

Do not try to replace this if you have no experience in replacing surface mounted flat packs, you will most likely damage the circuit board and make the radio un-fixable.

The part number for the electronic volume IC is TDA7411.

Without having the radio in front of me to do more troubleshooting, this is the best I can tell you.
Since you have checked all the wiring and and disconnecting the speakers did not help you will need some expert troubleshooting to find the problem.

Repair shops would normally charge about $100 to $120 to replace the amp IC and close to the same for the electronic volume IC.

I hope this helps you to figure out the problem, or to at least make an informed decision about getting it repaired.
If you need any more help feel free to ask, and a nice rating would be really appreciated if this was helpful to you.
Have a great day :)
Dave
P.S. I like your speakers, you picked some good ones

Posted on Jun 21, 2008

doin12volt
  • 233 Answers

SOURCE: kenwood deck reads protect and won't function

you have one of your speaker wires shorted out to the body of the car somewhere, or the speakers that you installed are bad. That is the only two reasons it will go into protect. Correct the problem, then reset the deck - it should work fine.
Kenwood builds this feature in to protect the outputs - so they dont burn up in the case of shorted speakers or wiring.

Posted on Jan 17, 2009

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