I've had a similar problem with my 83. When I hit the open/close button on the player, there's a noise like it's trying to open but is being blocked -- the front panel says "open" but it isn't. I hit the button again, the panel says "closed". I hit the button one more time, and the drawer opens.
I thought it was just a mechanical glitch with my player; interesting to find it's happening with others. I haven't installed the beta firmware (Aug. 24) . . . I wonder if that would do the trick.
cheers,
supervij