1, the remote control is broken, it is necessary to replace the receiver and handle of the remote control 2, LED lamp beads black, most of the lamp beads are broken, it is the patch to change the lamp board, it is the lamp string, it is best to find the lamp string with the lamp string, can not find the lamp string with a new lamp bead, it can also be used, but the lamp bead has positive and negative poles. 3, the LED controller or driver is bad, then change the controller or driver on the line.