1. Confirm the circuit: The newly installed lamp should be measured with an electric pen to check whether there is voltage in the circuit.
2. Driver problem: The light is not on, and the drive is a problem. If the lamp is not lit after turning on the light, you should purchase a new drive to replace it.
PS: Light-emitting diodes have high requirements on current and voltage. Therefore, constant current drivers and rectifiers and bucks in the driver are required to maintain their use.
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