good morning sir, sir my tv sony bravia smrat led 40 inch modal no. KLW40W652D, Sir, after installing the wall stand yesterday evening, when the TV was turned on, then the black lining in it started coming on the entire display, only black lining comes not the pictures, but I think the vertical lines that come, the same come Has gone or the display may have been broken, TV warranty prepaid is also left, one year warranty