I have a CDX-820 that I bought new in the mid to late 1980s. Haven't played it for probably 10 years now. I just plugged it in and connected it to my desktop Tivoli system for a test drive. When you put a CD in the tray and hit the open/close button, it reads the CD and gets the total time and number of tracks, as expected. Then, hitting "play" gives one of two results. Either there's no music, just a repetitive popping noise, like an LP tracking out after the last song. Or, it's like it's on fast forward, snatching quick samples of each track. When it was new, you could put a CD in the tray, hit play, and it would close the tray, read the CD, and play it. My best recollection is that at some point, it started wanting you to hit the close button before hitting the play button. That's a long time ago, though. Ideas for something to try, anyone?