The Olevia tv in our 2009 BC 3250TS has a black rectangle in the center of the screen after it gets warmed up. Sometimes the rectangle has words in it (they don't make sense, though), and we're anticipating replacing this unit. Since it's mounted on a "swinging door" frame, are we limited as to what brand/model would fit this hanging mount? Has anyone else had this problem? Olevia went out of business shortly after we purchesed our unit. Go figure.