Shenniu sk400ii modeling light does not light up after synchronization.

Does the subject want to ask, "What is the reason why the modeling lights of Shenniu sk400ii don't light up after synchronization?" The power supply of the modeling lamp is not turned on, the signal line is not connected correctly, and the controller is not set correctly.

1. The power of the modeling lamp is not turned on: please check whether the power switch is turned on and confirm whether the power connection is normal.

2. Incorrect signal line connection: Please check whether the signal line connection is correct and confirm whether the signal line is intact. If the signal line is damaged, it may also lead to poor signal transmission and the modeling lamp cannot work normally.

3. Incorrect controller setting: Please confirm whether the controller setting is correct, such as whether the correct mode is selected and whether the brightness and other parameters are adjusted.