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Deh-p4550 unit lights up but have no sound.

Deh-p4550 unit lights up and goes through all funtions but no sound. tested on the bench before instalation and all worked fine, same speakers were used and are wired up as they were on the bench.

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Check all speaker wires and speakers to make sure there are no shorts to ground or the chassis of the car.

Posted on Apr 22, 2009


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Pioneer DEH-P4550 wont produce sound

If you can, the first thing you need to do is check all of your speakers and speaker wires for shorts and/or grounds. You will need a multimeter/ohmmeter to do this. If the speakers and speaker wires check out good, you may have a bad output ic inside of the deck.

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Un hook all your speakers that the deck is powering and hook them up one by one sounds like u have a shorted speaker or wire and the unit is going into protection.The best way to chk the speakers and wires is with an ohm meter . Check each speaker wire to ground and across the speaker and see iof you have any shorts. The next step woulk be to remove the unit and have it bench tested.

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