There is a method to force the loading motor to eject the disc, by holding down three buttons. It's ages ago since I did this,..but try placing the DVD into standby,..then press and hold down together..Eject / Stop / CH UP for 10 seconds (on the machine NOT the remote). If it doesn't eject try same but CH Down instead. I think one of those were the button combination).
Cobweb
March 2012