The answer is as follows: To determine whether the LED lamp is faulty, whether it is the lamp bead or the controller, the following steps can be carried out:
1. Check whether there are light beads that do not light up: if there are some light beads that do not light up, then it is likely that the light beads themselves are faulty. You can replace these lamp beads and then test the working status of the lamp.
2. Check whether the whole light is not on: If the whole light is not on, then it is likely that there is a problem with the controller. You can check whether the power supply of the controller is normal and whether the controller is properly connected. If these are not problems, then you can consider replacing the controller.
3. Check the connection between the lamp bead and the controller: If the lamp bead and the controller are improperly connected or in poor contact, the lamp will not turn on. You can check if the joint is loose or falling off, and then reconnect it.
4. Use testing instruments: If the above methods do not solve the problem, you can use testing instruments to detect the working status of the lamp beads and the controller. For example, you can use a multimeter to test the resistance value of the lamp bead and whether the voltage output of the controller is normal.
On this issue, if the LED lamp does not work properly, there are several ways to determine whether the lamp bead or the controller is wrong:
2. Replace the lamp bead in the LED lamp to see if it can work normally. If it works, it means the problem is in the lamp bead.
3. If the lamp bead is still not working properly after replacement, you can use a multimeter to measure the voltage and current in the LED lamp. If the voltage and current are normal, the problem may be in the controller.
4. Check whether the connection cable in the LED light controller is in good contact, and whether it is loose or damaged.
5. If the above methods do not solve the problem, you may need to replace the LED light controller.
Use a multimeter to measure the quality of the lamp bead. Use a multimeter to measure the quality of the lamp bead if the controller is broken