Toshiba SD-4900 Progressive Scan DVD Player
Booby trap fixer upper
I had the same pro scan problem with this (otherwise excellent)Toshiba DVD player, but it's not difficult to correct. The instruction manual says to press the 'stop' button to turn off the disc you're trying to watch, then press and hold the 'stop' button for at least 5 seconds.  The Toshiba screen saver should then pop right up on your TV screen. Good luck... it worked for me.