Whilst mucking around with the prom option on our dvd player we have rather stupidly forgotten what the original default settings were. As a result we cannot play dvds of any kind. Can someone with this model please look up the prom option and let me know so I can set it back to normal?

To check the model ID (which displays the prom option also):

Make sure there is no disc in the player.
Go to SETUP>DISPLAY>TV ASPECT and highlight 16:9.
Press sequentially 1,3,9,7,1,3,9 then ENTER.
The system information will appear and will show the Prom Option at the bottom of the table.