DISH, COMCAST, RCN, OR WHOEVER. THIS TYPE OF PROBLEM IS USUALLY THE PROVIDER'S FAULT; THOUGH I'M NOT TOO UP TO DATE ON "CLOSED CAPTIONING." HOWEVER, if the black-box is showing, does it change as the dialogue changes???

DOUBLE CHECK ALL THE LG SETTINGS, AS WELL! Just one misstep can screw up your entire set.

SOUNDS like it's a SOFTWARE FIX.

river.