The PTZ does not self-check after being powered on.

(1) The customized model has turned off the self-test function after power-on or power-off and restart;

(2) The control wire is connected reversely or open-circuited (be sure to check the power cable clearly before connecting it, otherwise the machine will be burned if it is connected wrongly);

(3) Check whether the power adapter has normal voltage output, whether the current output meets the requirements, and whether it is connected to DC or AC.