Samsung dvd recorder/player r121

[qanda]This thread is about the Samsung DVD Recorder. Click here to see full specs[/qanda]I am having problems loading discs and ejecting discs when first switching on the dvd player.There seem to be long delays (up to 15 minutes) before disc platter ejects and/or video signal is sent to tv.Sometimes unplugging or switching unit on and off helps but not always.Any suggestions?
mark 2