The present disclosure describes a display apparatus. The display apparatus includes a power source, a power supply circuit, a load and a control circuit. The power source is configured to supply electric power to the load. The power supply circuit connects the power source and the load respectively, and configured to turn on or off an electric path between the power source and the load. The control circuit connects with the power source and the power supply circuit respectively and configured to control the power source circuit to determine whether the power supply supplies power to the load.