Provided is a television power source, comprising a main power source (1) and a voltage conversion circuit (2) electrically connected to the main power source (1). The main power source (1) comprises a first output terminal (11) for outputting a backlight driving voltage and a second output terminal (12) for outputting a mainboard driving voltage. The voltage conversion circuit (2) comprises an input terminal (21) electrically connected to the first output terminal (11) or the second output terminal (12), and a third output terminal (22) for outputting a standby voltage. The television power source can convert the backlight driving voltage or the mainboard driving voltage to the standby voltage by means of the voltage conversion circuit (2), such that the mainboard driving voltage, the backlight driving voltage, and the standby voltage can be simultaneously generated by one power source, thereby effectively decreasing the number of flyback power sources, reducing the cost of the television power source, and improving cost competitiveness of the television.