I have owned the Denon for 7 years. The problem just (within 30 days) occurred. The ringing happens whatever the source (DVD, CD, etc.).
Yes, I mean both front and rear. I have checked the back of the receiver for loose or stray strands (there are none). I have not tried resetting the processor. How is that done?
Ok. Give me some time to get this completed and I will get back to you.
Tried the reset and problem still persist. Will try the swapping the speaker wires next. Stay tuned.
The distortion follows the left channel. It does not follow the speakers. Any speaker plugged into any left channel (A or B) produces a high pitched distortion whether front or rear speakers.
Okay, that makes sense. I believe our troubleshooting has isolated the distortion to the front left channel.