Question about Sony MHC-ZX70DVD System

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Buzzing speakers I've had my Sony MHC-ZX70DVD mini hi-fi for about 5 or 6 years and it's been absolutely fine, until now, when it's started making a buzzing/humming sound through the speakers. It doesn't change with the volume, but does disappear when there's no volume at all. I've tried unplugging everything and even using different speakers, but still they buzz. I've moved the stereo to a different room to make sure it wasn't the plugs or anything like that. Any ideas?

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  • Anonymous Sep 09, 2008

    I have exactly the same problem. Whitesox's solution can't be right because the buzzing is audible even through headphones plugged into the front. It's not the speakers or the connection as far as I can tell. Please help!

  • Anonymous Jan 09, 2009

    I have the same problem - its not the speaker, as it works fine when both speakers are wired up to the same output. Any ideas?

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Have you got cable TV lately? If so, you may have ground loop problem. Easy way is to use isolation transformer to fix it:
http://en.wikipedia.org/wiki/Isolation_transformer

Posted on Dec 15, 2013

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It is merely degradation of the connection. Try unconnecting the speakers, cleaning the tips a bit, replacing them in, removing, recleaning, and then replacing a final time. This should get some scoring off of the connection... Aside from this, a new set of speaker wire is the best solution but just let me know what you decide on! Hope this helps!

Posted on Jul 27, 2007

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From Sony's Trouble Shooting site:

http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&externalId=C154211&fes=true&mdl=MHCZX70DVD

If none of this helps, I suggest making sure your wires are correctly connected from your CD player to the speakers. Also, make sure no exposed wires are touching, it should make an audible hiss if they are touching anywhere.
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