In fact, the most common fault is the ballast failure. The overall bad situation of leds is rare.
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led light flashing cause:
First, if the outdoor lamps also have a stroboscopic phenomenon, you can first rule out whether the lamps are in water. The result is that it flashes and it doesn't light up. The LED lamp bead and the driver are broken, and if the driver waterproof is good, it is just that the lamp bead is broken and the light source can be replaced.
Second, LED lamp beads and LED driver power does not match, the normal single foot 1W lamp bead withstand current :280-300mA, voltage :3.0-3.4V, if the LED lamp bead chip is not sufficient power will cause the lamp bead source strobe phenomenon, the current is too high LED lamp bead can not withstand a light off, serious phenomenon will put the LED lamp bead built-in gold wire or The copper wire is burnt out, resulting in the LED lamp beads not shining.
Third, if the drive has over-temperature protection function, and the material heat dissipation performance of the lamp can not meet the requirements, the drive over-temperature protection will start to work, there will be a flicker and a flicker phenomenon, such as :20W projection lamp shell used to assemble 30W lamps, heat dissipation work is not done, there will be a flicker and a bright phenomenon. The reason for the failure of the LED lamp is not much related to the LED lamp beads. As long as the LED lamp bead is used, the operating requirements are met. Sufficient heat dissipation capacity, the basic service life will be more than 100,000 million hours.
The light bulb is broken.
Unlike traditional light bulbs, LED lights do not require ballasts.
The role of the ballast is to stabilize the current, so as to achieve a stable light bulb, the frequency is also stable, and the eye is not hurt.
The LED lamp is a light-emitting diode, as long as there is current, it will emit light, and the light source is stable, the energy consumption is low, and the ballast and other AIDS are not required.
So when the light doesn't work, it's basically a broken bulb.
In most cases, the LED lamp beads are bad, and the ballast power supply is less damaged. LED lights are made of multiple LED light emitting diode lamp beads in series, so the voltage of the power supply is relatively high and the current is not large. Because the LED lamp beads are lit for a long time, it will cause the accumulation of heat, which may burn the lamp beads. The power supply also has damage but its probability is less than the damage of the lamp bead.
Usually the ballast is broken, and the ballast can still be used.