Question about Pioneer Car Audio & Video

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Unit worked fine when car was shut off last night. Today unit powers up, displays radio pre-sets and recognizes cd tack and counts elapsed time, but no sound comes out of speakers

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  • George Shaeffer
    George Shaeffer Oct 14, 2013

    I don't think it is the ignition switch, because the unit powers up relaibly. There is no secondary unit, just the pioneer DEH-P3800MP hooked directly to the speakers. The fade controls are all adjusted properly, but even if they were all set 100% to one location (e.g., left rear), then sound should be coming from that one speaker. Please tell me more about the blown transistor - Is it repairable? Is it worth repairing? Is there any kind of a thermal protection or circuit breaker on this unit for the audio output? Thanks.

  • mikadot
    mikadot Oct 15, 2013

    I don't know that unit specifically, but i can repair anything i can take apart if i see the numbers on the components. There are not many electronic repair places these days. Try looking for factory authorized repair

  • George Shaeffer
    George Shaeffer Oct 15, 2013

    Thanks, Mikadot, I'll try that, though to be honest I won't be too surprised if I end up just replacing it because of the cost.

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  • 2,113 Answers

Possibility #1: Your ignition switch may be aging and may need replacing. #2: You may have a secondary unit (amplifier etc) that is not powered up (burnt fuse, loose connection etc). #3 fade controls may be all to the back or all to the front etc. #4: or perhaps you blew your transistor in the player. It would be hard to diagnose from here.

Posted on Oct 14, 2013

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Posted on Jan 02, 2017

KaeZoo
  • 156 Answers

SOURCE: power will not stay on

Sounds like you're not getting voltage on the accessory power lead. This is the red wire at the back of the deck, and it supplies power whenever the key is switched on. It's possible that your vehicle's radio fuse is blown.

Posted on Aug 11, 2007

merle840
  • 113 Answers

SOURCE: Alpine CDA-7873 (Same as CDA-7876 basically)

the blue line from the radio harness does not have power when the cd or aux are being used and the amp is not turning on-wire the remote line from the amp to the red line and your amp will stay on and you will get sound

Posted on Mar 27, 2008

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