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Pioneer M770 has cracking sound every a few seconds

My Pioneer M770 amplifier has very lound cracking sound every a few seconds. Initially it was not lound and the cracking occurred every 10 --20 seconds, but it is getting louder and more frequent. What could be wrong? Is there any simple fix?

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  • achen9 Jan 18, 2009

    Yes, it was during music play. I have not used it for a while, then I turned it on. It doesn't have the cracking sound anymore, but a heavy static noise. It synchronizes with the level of volume, the louder the music, the louder the 'static'. When it is silent between songs, the static stops as well. It does not matter if I'm playing a CD, tape, or using the tuner.

  • Dazzarus
    Dazzarus May 11, 2010

    Is this during music play?



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Neads all boards checking for dry joint on solder connections and if found resolder,other possible causes are the control pots need cleaning

Posted on Jan 08, 2009


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