Common Failures And Solutions Of Home Led Lights
With the national support and advocacy of energy saving and emission reduction in recent years, LED lights with its brightness, low energy consumption, long life and other characteristics, gradually dominate today's electric light market. Generally speaking, LED lights are very difficult to occur in the problem of LED lights, no more than three kinds of problems: lights do not light, lights dim, flickering after the lights are turned off. Today we will analyze and solve each problem one by one.
Structure of LED lights
LED lights come in two forms, a ceiling light and a light bulb. Regardless of the form of the light, the internal structure is the same, divided into lamp beads and drivers.
1. Lamp beads
When you open the white plastic part of the ceiling light's housing or bulb, you can see a circuit board covered with yellow rectangles inside. This circuit board on the yellow, is the lamp beads lamp beads commonly known as light-emitting diodes, is the most commonly used electrical components in electricity. The beads are the light emitting body of the LED light, and their number determines the brightness of the LED light.
2. Driver
The driver of an LED bulb is mounted on the bottom and is not visible on the outside. The driver of a ceiling light is a black box, and the driver needs to be installed first when the fixture is installed.
The driver has the functions of constant current, buck, rectifier and filter.
Solutions to common problems of LED lights
1. LED lights do not light up the solution
When the electric light does not light up, you should first make sure that the circuit is okay. 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 making sure the circuit is OK, you can start the following overhaul.
The electric lamp does not light up, nine times out of ten is the problem of the driver. Light-emitting diodes on the current, voltage requirements are high, the current, voltage is too large or too small can not be properly lit, so the need for constant current driver and rectifier, voltage regulator and other devices to maintain the use of the driver.
If the light beads do not light up after the light is turned on, the first thing you should consider is the driver problem. At this time, you can buy a new driver for replacement.
2. LED lamp brightness dimmed solution
This problem should be solved together with the last problem. Electric light brightness dim or not bright, are likely to be the case.
LED lamp beads, is divided into a string, each string on the beads, is connected in series, between the string and the string, is connected in parallel. Therefore, the string has a lamp bead burned, it will lead to the string of lamp beads are not bright. If each string has a burned-out lamp bead, it will cause the whole electric light to be unlit. If there is one lamp bead burned out on each string, the capacitor or resistor on the driver should be considered to have a problem.
The burned lamp beads and normal lamp beads can be seen from the appearance, the burned lamp beads have a black dot in the middle of the position, and this dot can not be erased.
If the number of burned beads is not much, the two soldering feet behind the burned beads can be soldered together with a soldering iron. If the number of burned lamp beads is too much, it is recommended to buy a lamp bead board to replace it, so as not to affect the lighting brightness.
3. LED lights off after the flickering solution
Occurrence of electric lights after the lights off flicker, the first thing to confirm the wiring problems. The most likely problem is the zero line of the switch control. This time to correct in time to avoid danger, the correct approach is to switch control the fire wire, zero wire connected to the lamp.
If there is no problem with the circuit, it is possible that the LED lights produce a self-induced current. The easiest way is to buy a 220V relay, the coil in series with the lamp, you can solve.
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