"LED lamp with its elevated brightness, low energy consumption, long life and different characteristics, gradually occupy the current lamp market. Broadly speaking, it is extremely difficult for LED lights to have problems. Among the problems of LED lights, there are no more than three kinds of problems: the lights are not on, the lights are dimmed, and the lights are blinking after being turned off. Today we ws2818 led strip to analyze and solve the problems.
LED lights come in two forms, a ceiling light and a bulb. Regardless of the form of the lamp, the internal structure is the same, divided into a bead and a driver.
Lamp bead
Open the shell, or the white plastic part of the bulb, to reveal a circuit board covered in yellow rectangles. The yellow on this circuit board is the lamp bead. lamp bead is the luminous body of an LED lamp. Its number determines the brightness of LED lamp.
drive
The driver of the LED bulb is mounted at the bottom and cannot be seen from the outside. The driver of the ceiling light is a black box. You need to install the driver first when installing the lamp.
The driving device has the functions of constant current, step-down, rectification and filtering.
LED light is not a bright solution
When the light is out, you should first make sure that the circuit is OK. If the lamp is newly installed, you should use an electric pen to measure, or install an incandescent lamp to see if there is voltage in the circuit. After determining that the circuit is OK, you can start the following maintenance.
Driving problem
Nine times out of ten, the light doesn't work because of the drive. Light-emitting diodes have strong requirements for current and voltage. If the current and voltage are too large or too tiny, they can not be properly lit. Therefore, constant current drivers, spectators, step-downs and additional devices need to be maintained.
If the light bead is not bright after the light is turned on, the first thing to consider is the problem of the drive. At this point, you can purchase a fresh drive for replacement.
LED light dimming solution
This problem should be solved in connection with the previous one. This may be the case if the light is dimmed or not lit.
Lamp bead problem
The lamp beads of the LED lamp are divided into a string of a string, and the lamp beads on each string are connected in series, and the strings are connected in parallel.
Therefore, if one of the beads on the string is burned, it will cause the string of beads to be out of light. If one bead in each string burns, it will cause the whole lamp to go dark. If one bead is burned in each string, consider that there is a capacitor or resistance problem on the drive.
The burnt lamp bead and the normal lamp bead can be seen from the appearance. The burnt lamp bead has a black dot in the middle, and the dot is indelible.
Inside the red circle are burnt lamp beads.
If the number of burnt lamp beads is not large, the two welding feet behind the burnt lamp beads can be welded together with an electric iron. If the number of burned lamp beads is too great, it is recommended to buy a lamp bead board to replace, so as not to affect the brightness of lighting.
The solution of LED lights flashing after the lights off
When the lights flicker after turning off, we must first confirm the wiring problem. The most likely problem is the neutral line of switch control. This time to correct in time, in order to avoid danger, the correct way is to switch control fire line, zero line connected to the light.
If there is no problem with the circuit, it is possible that the LED lights are generating a self-induced current. The simplest method is to buy a 220V relay, the coil and the lamp in series, can be solved. See our previous article on how household lights flicker when turned off."