Samsung HCL552W rear projection TV replaced converg ics STK392-040 because of pincushion. Wow these really get hot! pincushion now ok but Tv still has black bars or stripes that appear across screen that come and go as scenes change. Bars are 1/2 inch to 2 inches wide. not always on screen. These are not the bars at top and bottom of screen. Also has some sort of diagonal interference lines on screen. Thanks