I have had my LG 37LG3000'' for about a year and it has recently stopped working. I can switch it on via my remote, but only 1 channel works, with no sound. It says that it is locked and have tried the '7777' code and many more, but to no avail. Have also tried unlocking from the TV using the buttons on the side, but again nothing.

Televison & Video - LG - 37LG30 37 in. LCD HDTV