It HAS happened on other DVDs, I noticed it more on Return of the King. It happened often on ROTK, I thought mabey it was the 4ohm impedance of the centre channel being on all day long. So I turned down the volume about 5 db for ROTK, didn't seem to help. I also felt the amp on the top, it was warm to the touch, but not hot by any means. This is after a whole day of LOTR...
I might try another DVD player I have with a coaxial audio out, play the same scene I was noticing it in and see if that is the problem. I actually have a 5 year warranty return for any reason on my RX-V659. So I am going to wait until the replacement comes out next year, and take mine in for that high pitch squealing, and hopefully get a new model that has HDMI audio...
-Hutz
