Different screens can therefore also contain different types of LED strips in a type of device. It is therefore important to know in advance which strips are in the screen. On the back of the panel is a sticker with the number of the panel. (sticker is with powerboard and mainboard) see example above. take off the back cover to see the sticker. Many LED screens contain LED strips (usually about 3 to 18 pieces) that are easy to replace. In case of problems with one or more strips, we recommend replacing the complete set. So you don't have to disassemble the entire screen first to see which strips are in it. When ordering, we ask for the model number of the TV, the panel number and sometimes the serial number. (Panel type number sometimes depends on the serial number).