My main BD player is an Oppo BD-83 - have had it for about 5 years and it has worked flawlessly - until now. The disc tray won't close 95% of the time unless I press the close button on the remote. Not a huge deal but, still, the tray should close if I press the button on the unit itself. Then there are the "Unknown Disc" messages I get many times after inserting a disc that should start playing right away. These are "cosmetic" issues as the player works fine otherwise but they're still annoying. Anyone else encounter these problems?