Question about Onkyo TX-SR503 Receiver

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Distortion/noise and buzz in front left speaker

I recently moved and redid all my speaker and component connections to my TX-SR503. No problem. Great sound as usual. A few days ago I made connections to get cable audio through the receiver and to hook up a new DVD player, the Philips DVP5982. Now all of the sudden -- not saying there's a connection -- I get terrible noise, distortion and a low buzzing/hissing through my left speaker when I power up the receiver. The noise goes aways after a few minutes, but the buzzing doesn't I've tried a different speaker cable, a different speaker, redoing all the connections, moving components -- and the buzz/hiss lingers. Help?

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  • OnkyoIssues Dec 31, 2007

    I have a similar issue. My HT-530 makes a very noticeable buzz in all speakers when I have the receiver on any of the surround sound modes. The buzz lessens if I change the Dimmer setting ( which is really weird)

    I have the extended warranty and I've taken this receiver into Circuit City. They told me there was nothing wrong with the device. Interested to hear if anyone else has a solution.

  • cattaand Apr 19, 2008

    Same hissing problem from one of the speakers (Onkyo SC-570) of my hifi system. Exchanged cables and re-did connections, without success. 

  • Anonymous Dec 25, 2008

    I have the same problem. Front Left channel presents reduced audio output with static and distortion. The problem is not related to the source, speaker wire, or speaker. It is a nice receiver, but not worth doling out much cash to fix. I'd hate to toss it and would love to fix it myself. Is this doable?

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Try to see if the reciever will make the buzzing/noise without anything connected to it except power, and speakers. Tune into a local radio station and see if the noise continues. If the noise has stopped, then you know there is an issue with the player or cable.

Posted on Aug 07, 2008

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Posted on Jan 02, 2017

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Download SR605 service manual.
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See this:
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