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Ann Hawley Posted on Oct 30, 2006
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Left Speakers not working on A or B channel

The left speakers are not working on the A or B channel. Right speakers are fine. I cannot locate a fuse on the receiver.

  • trumpet dude Jan 27, 2008

    I am experiencing a problem with the Right Speakers not working on the A or B channel on my Onkyo receiver. I have already done troubleshooting and determined the speakers are not the problem. Also, my Polk center speaker also does not appear to be working.



    Please help!



    Sincerely,



    [email protected]

×

1 Answer

Anonymous

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  • Master 3,130 Answers
  • Posted on Oct 30, 2006
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Joined: Mar 22, 2006
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Have you tryed yet to switch the right speaker where the left one is? If it works then you know the speaker is bad. If you move the left speaker over to the right channel and it works and sound now comes out of the left speaker, you know there is a fault in the amp somehwre. If your not a tech and have not had any solid state equipment repair experience, then your going to have to have the amp serviced by a trained tech.. Good Luck

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As power amps are just two amps joined together all you need do is identify the left channel and compare it with the right. Ignore any parts common to both channels. The first thing to do is a visual check. If something looks broken burnt, or odd compared with the right channel then you have probably found the culprit. I suspect you could have a power output failure. It might be that the output devices are separate transistors. They might need to be replaced.
By the way just follow either the internal speaker leads or the connections to locate the right and left channels.
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Help

I recommend you swap your left and right input cables to make sure it's not a source issue.

So from your headunit, plug the left channel output into your amps right input and your right channel output into your amps left input.

If the same side is still not working then disconnect both (or single speaker if it bridged) the speakers from the not working side at the amp. Connect the front and then the rear speakers individually and retest to see if one of them works.

If one does work then check the cabling and speaker connections on the one that doesn't. If it's shorting out anywhere it will stop your amp from powering that channel.

Failing that, it could just be that your amp has partly failed.
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