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Onkyo TX-SR705 speaker hum

I'm having the same exact problem you posted. If you go into the "Speaker Settings" menu on the receiver's setup (menu 2-1) does the hum stop? You don't even have to change anything, just go to that menu. It stops when I'm on the menu, but as soon as I exit the menu it comes back. I've tried disconnecting everything but the speaker wires and I can still hear the hum. I've owned the receiver since March 08 and this just started happening a week ago.

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  • Anonymous Dec 12, 2008

    I have the same problem. However when I put it on mute it goes away.

  • Anonymous Apr 09, 2009

    I have a TX-SR705 with a similar problem. I hear a low level hum in all speakers on all channels (DVD, CBL, AUX, GAME, etc.) The problem started about a year after I bought it. The volume of the hum does not change and cuts out for brief periods when changing TV channels on cable or switching from one amp channel to another. The hum also mutes with the mute button but remains if I turn the volume down. Any ideas?

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