(1)When the lamp does not turn on when it is powered on: check whether the switching power supply has a working output voltage, or whether the working voltage of the switching power supply is normal.
(2)After the switch power supply works normally, the lamp still does not light up: check whether the signal line of the lamp is connected incorrectly or whether the connection is normal, and check whether the controller works normally and whether it has been powered on.
(3)The above work is normal, but the lamp still does not light up: check whether the SD card of the controller has been inserted, and whether there is a program in the SD card.
(4)The lamp jumps or flickers: Check whether the negative pole of the lamp is connected in parallel with the negative pole of the switching power supply, including the GND of the controller.
(5) If the above inspection is completed, it is still out of control. Please contact our sales staff to deal with it.
A normal LED inground lights order takes 7-10 business days to complete, excluding transit time, which can take anywhere from 7 to 15 days, depending on your location. Custom and bulk orders may take a few days longer.
Yes, we support samples for you to check the quality before a large order. Usually, the sample needs 5 -7 days after receiving your payment.