10-42 Inch LED TV Driver Board Constant Current Board Universal Inverter New,Driver Board Constant Current Board Universal Inverter New 10-42 Inch LED TV,ON,EN,ON_BL:Switch signal pin, LED+: the positive electrode of Light emitting diode (lamp), LED-: the negative electrode of Light emitting diode (lamp), Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item,ON/OFF.Inverter New 10-42 Inch LED TV Driver Board Constant Current Board Universal.