Question about Motorola Mobility Dcp 501 Home Theater System 5.1 Channel 500 Watt Receiver Dvd Player

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Extremely loud squealing coming from surround sound receiver!!

For the past 3 months my surround sound started emitting an extremely loud squealing noise. The noise over powers everything. Even if I mute my receiver, the noise still continues until I turn off my receiver. Its very random too. Sometimes it lasts just a few second and goes away, sometimes I'll just turn my receiver off & then back on after a few seconds and its gone. Then, there are those days it just squeals all day long, no matter what I do. Please help, I tried everything from resetting, to powering off & unplugging for an hour, to changing my cables.

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  • Grey Gorey
    Grey Gorey Mar 18, 2014

    I should also add that the squeal happens on all channels.



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Posted on Feb 01, 2015

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Is this squealing noise coming from the unit itself(please turn the volume down when trying this), or through the speakers?. If it's coming through the speakers, please tell me which channels.

Posted on Feb 01, 2015

  • Audio Service Clinic Feb 01, 2015

    Pardon my negativity, but this unit is between 10 and 15 years old. I seriously doubt you will find anyone at Motorola that even remembers this unit.


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  • 24 Answers

It has a dry solder joint internally.

Posted on Apr 13, 2014

  • Grey Gorey
    Grey Gorey Apr 15, 2014

    Thanks you so much for responding! So, if I can find the dry joint(s), can I just re-solder to fix the problem?


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