Pioneer DV-333 problem

I'm having a problem with my Pioneer DV-333 player and was wondering
if someone could help me out with troubleshooting.  This is not the
discs as it happens with all of them.

When I put in the disc and push play, I get the Pioneer logo on the TV
but instead of going into the movie there is a whirring from the tray
and I just get a blue screen on the TV.  The loading indicator on the
front of the player will go off and on and keep trying to load the
movie, but no luck.

I found a procedure for resetting the player on the Pioneer web
(pressing the stop, pause, and skip reverse concurrently) but that
doesn't fix it either.

I am able to play VCD and CD but DVD's.

Anyone have a similar problem or any ideas, or do I just have a
doorstop.

Thanks,