What is the reason for the LED light head flashing, and what is the fault of the LED light flashing

The LED high bay light is not lit, you can follow the steps below to repair: 1First of all, check whether the power cord of the LED high bay light is intact, if the power cord is damaged or in poor contact, you need to replace the new power cord.

2.If there is no problem with the power cord, you can check if the power plug is loose or damaged, and if so, you need to plug it back in or replace it with a new one. 3.

If there is no problem with the above two steps, you can try to flip the LED high bay light over and check if the lamp holder is loose or damaged, if so, you need to reinstall or replace a new lamp holder. 4.If the LED high bay light still does not light up, it may be that the LED lamp bead or the lamp holder itself is faulty.

In this case, it is necessary to seek the help of a professional maintenance personnel to ensure that the problem can be correctly diagnosed and repaired. When repairing LED high bay lights, it is necessary to...

The switch does not control the live wire, it controls the neutral wire, or there is an induced voltage in the line.

The reason why the light is off and flashing is that the zero live wire is reversed, and the switch has an indicator light to induce the current.

1. The zero fire line is reversed

Under normal circumstances, after the zero live wire is drawn from the distribution box, the neutral wire should lead to the light junction box, and the live wire leads to the switch junction box. That is, the switch should control the on/off of the live wire. If the connection is reversed, the switch controls the on/off of the neutral line, which will cause the voltage to be present at both ends of the lamp at all times.

As a result, the live wire generates a weak current with the ground, which causes flickering in the case of more sensitive fluorescent and LED lamps.

Workaround:It was necessary to change the direction of the zero line of fire in time. The reverse connection of the zero live wire will not only cause the lights to flicker, but also cause injuries to the maintenance personnel during the maintenance of the lamps.

2. The switch has an indicator light

The indicator light on the switch is still on when the switch is off. This part of the current, through the capacitance in the light starter, accumulates, will cause the light to flicker.

Workaround:Remove or replace the indicator light inside the switch.

3. Induced current

It is commonly found in places with dense power lines, such as balconies, storage rooms, etc. If these wires are close to the light line, or the wires carry high-power electrical appliances, such as water heaters, etc. An induced current is generated that causes the lamp to flicker.

The impact of this is greater for LED lights, which are more sensitive.

Workaround:A contactor coil can be connected in series at the lamp location to eliminate weak currents in the line.

Summary. 1. If the outdoor LED lamps also have the phenomenon of strobe on and off, it means that the lamps are flooded. The consequence is that it doesn't light up when it flashes. If the lamp bead and the driver are broken, if the drive waterproof is done well, you only need to break the lamp bead and replace the light source.

What is the reason for the LED light flashing suddenly.

LED lights? The power of the lamp bead is insufficient, can not match the driving power supply, the current through is higher than the current that the lamp bead can bear, so that the lamp bead flickering, in serious cases, the gold wire in the lamp bead will be short-circuited and then burned out, so that the lamp bead is completely not lit.

1. If the outdoor LED lamps also have the phenomenon of strobe on and off, it means that the lamps are flooded. The consequence is that it doesn't light up when it flashes. If the lamp bead and the driver are broken, if the drive waterproof is done well, you only need to break the lamp bead and replace the light source.

2. If the drive has an over-temperature protection function, and the material heat dissipation performance of the lamp cannot meet the requirements, the over-temperature protection of the drive will start to work, and there will be a flashing phenomenon, for example: the 20W flood light shell is used to assemble a 30W lamp, and the heat dissipation work is not done well, which will lead to flickering.

3. LED has the advantages of energy saving and environmental protection, and has become a major trend in the development of the lighting industry. Since the technology and product attributes used in LEDs are very different from those of conventional luminaires, it is clear that the current general luminaire safety standards are no longer applicable.

Reasons: 1. The power transformer is not good, the parameters are not compliant, and the winding is not enough or more, resulting in insufficient magnetic saturation or inductance. 2. The feedback circuit is faulty.

3. The load current is too large or the load voltage is too small, which is lower than the minimum output voltage of the power supply and causes automatic protection.

When the voltage sampling circuit design of the LED lamp is unreasonable, the power supply sail voltage is too low, that is, it is lower than the normal working voltage, which will cause the power supply to fail to start and flicker.

If you find that the LED light flashes after the light is turned off, you must first confirm the line. If it is the wrong line, it should be corrected in time to avoid danger, the correct connection is to switch to control the live wire, and the zero line is connected to the LED light.

If there is no problem with the circuit, it is possible that the LED light is generating a self-inductive current. The easiest way is to buy a 220V relay, connect the coil in series with the LED light, and sell it by hand to solve the flickering problem.

The LED light flashing could be due to the following reasons:

1. LED lamp beads do not match the LED drive power supply, normal single full 1W lamp beads bear current: 80-300mA, voltage: , if the lamp bead chip is not full power, it will cause the light source strobe phenomenon, the current is too high The lamp beads can not withstand a light on and off, and the serious phenomenon will burn the gold wire or copper wire built in the lamp beads, resulting in the lamp beads not lighting up.

2. It may be that the drive power supply is broken, as long as it is replaced with another good drive power supply, it will not flash.

3. If the drive has an over-temperature protection function, and the material heat dissipation performance of the lamp cannot meet the requirements, the over-temperature protection of the drive will start to work, and there will be a flashing phenomenon, for example: the 20W flood light shell is used to assemble a 30W lamp, and the heat dissipation work is not done well.

4. If the outdoor lamps also have the phenomenon of strobe on and off, it means that the lamps are flooded. The consequence is that it doesn't light up when it flashes. If the drive is waterproof, it is just a matter of breaking the lamp beads and replacing the light source.

How to deal with LED flashing.

1. In off-line low-power LED lighting applications, a common power topology is an isolated flyback topology. In the case of the ENERGY STAR solid-state lighting standard 8W off-line LED driver reference design, a dynamic self-powered (DSS) circuit may activate and induce light flicker because the sinusoidal square-wave power conversion of the flyback regulator does not provide constant energy to the primary bias.

In order to avoid this problem, the primary bias must be able to be partially discharged at each half-cycle, and accordingly, the amount of capacitance and resistance that make up the bias circuit needs to be appropriately selected.

2. Normally, the human eye can perceive light flickering at a frequency of 70 Hz, and it will not perceive above this frequency. Therefore, in LED lighting applications, if a low-frequency component of the pulse signal appears below 70 Hz, the human eye will perceive the flickering. Of course, there are a variety of factors that can cause LED lights to flicker in specific applications.