Philips Magnavox 15MF400T 15 in. LCD Television "monitor osd controls locked" Questions

...monitor to a box, for use as a tv and the screen now reads osd locked. I can't get picture or sound. To unlock the OSD Controls press the ?MENU(OK)? button for more than 10 seconds while there is ...

monitor is locked i can bring up the menu but cannot select anything First of all, try holding down the MENU button for about 15 seconds. Just in case you don't have it already, here is the link to ...