Have a five year old Samsung 22inch LCD, LPT227W. Like most everyone else I've lost power to the TV. I'm determined to repair it myself, found a replacement part online before stumbling onto this forum. I decided to open the case first to verify the part #. Unfortunately thats where my efforts came to a halt. There are only two visible external screws. I suspect it must have some type of locking tabs holding the case together, but am not sure. There is also a slot in the back of the case that has an imprint of a padlock above it . Need help to open the case before I end up ripping the back off in frustration.