Question about Onkyo TX-SR505 Receiver
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. I have removed all inputs to the receiver, including speaker wires. The hum (which is worse on the "phono" select setting) is still audible on the headphone jack.
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Posted on Jan 02, 2017
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