If you wish to get some details; check the site linked here. Pull up older posts.
Search the site by type in the "Brand Name" (Exclude the model number) to your device, in the "Search box at the top right of the display window" to get gathered related posts.
Unlock procedure and to override the password lock to many popular brand TVs are given. Search the site by type in this key phrase "How to unlock television"; in the search box at the top left of the display window, to get gathered related posts.