Receiving card plays a key role in synchronous led display systems. These cards keep on reading program command on or after the sending card or the computer. But occasionally, though it's rather rare, the card may flop. And while the problem noticed is certain the receiving card, you require to substitute it with a new one. The replacement procedure is very simple - you just have to turn off the power button of the led cabinet connected to the receiving card, undo the screws, take the receiving card out, organize the novel receiving card and wad the cables consequently.