Page 1 of Problem with philips 762

After watching about 35min of training day, the picture froze and the dvd player stopped responding .i found i couldn`t open the drawer but after down powering the unit the disc wil still not play.

After powring down for about 30 mins and retrying the open/ close button as it powers up the drawer opens.
I retry the disc and it plays but only for a short while.
I thought this was a badly pressed disc until it happened with lotr.
Please help .
i have had a look inside the unit and cleaned the lens with isopropel alcohol(recommended by philips) but no help
maybe a firmware upgrade would help.
any ideas....
J