Black box appears in middle of screen - LG 42PB4D 42 in. Plasma HDTV

SOURCE: I have a LG plasma T.V., model 42PB4D. Black box/middle of screen

Try this:

In the menu go to CC and set the TV to CC1 as this is a text box appearing for captions. Hope this works!

SOURCE: Black box appears in middle of screen

go into the menu and look at the closed caption option----if TEXT is highlighted--this is your problem---select CC! or if it has it OFF.The TEXT will only appear on certain channels and it most likely was activated by someone changing the closed caption options. If this has been helpful give me a vote to let me know.