MINI LED TELEVISION CONTROL SYSTEM AND METHOD

A mini LED television control system and method. The system comprises: a power supply used for supplying power to a backlight board after a voltage is adjusted; a control board connected to the power supply, the control board comprising an FPGA used for detecting a current value and controlling a power supply output voltage, an analog-to-digital conversion chip used for collecting the voltages of sampling circuits, and a plurality of sampling circuits connected to a plurality of light boards and used for collecting voltages of the light boards; constant current ICs disposed on the light boards and used for providing light bar voltages and sending brightness information; and a mainboard connected to the control board and used for enabling and synchronizing backlight brightness signals. The control board is used for converting the brightness information sent by the mainboard and then sending the information to the constant current ICs on the corresponding light boards. The constant current ICs control magnitudes of currents of corresponding subarea LED lamps. An output closed loop control system can be adjusted by means of a power supply voltage, so that the power supply outputs the most appropriate voltage, and the overall loss of a mini LED television is reduced.