The LED lamp blinks after turning on - what to do?

Recently, new bulbs come to replace ordinary bulbs, they are called LEDs. They significantly save energy, and shine no worse than their old counterparts. And they are also very convenient when designing a stretch ceiling, especially multi-level. However, users are increasingly faced with the problem of flashing lights. In this article we will answer the most common question of users of such lamps: The LED lamp blinks after turning on, what should I do?

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How are energy-saving lamps arranged?

When the most common light sources were incandescent lamps, no one thought about the problem of flicker. Mains voltage was applied directly to the spiral itself, which served as the load resistance.

The device of the proposed lamp is notable for its complexity. Nowadays, light sources include the so-called electronic converter, which can take the form of a driver or a voltage source.

Consider every detail of the lamp:

• Basement It is made of nickel-plated brass - this provides good contact with the cartridge. In addition, such material is not afraid of rust.
• Polymer base base. Made of polyethylene terephthalate - this material contributes to the high protection of the housing from electric shock.
• Driver. He is responsible for the stable operation of the device even with active voltage drops. A driver malfunction may cause energy-saving lamps to flash after shutting down.
• Radiator. Made of anodized aluminum alloy. Such a tap is very effective, which cannot be said of a tap from ordinary aluminum.
• Circuit board made of aluminum on a heat-conducting paste. This part makes it possible to remove heat from the chips directly to the radiator - this ensures a constant temperature mode during the operation of the chips.
• Chips
• Diffuser. It is a light-scattering hemisphere.

Consider the principle of operation of energy-saving lamps. When we turn on this device, the path along which current flows runs from the base to the voltage converter, and then to the LEDs themselves.

Important! The quality of the current directly depends on how complex the converter circuit is. At the same time, the quality of the lamp directly depends on the quality of the driver, which is responsible for any changes in the network and frequency interference.

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Reasons for the LED lamps to flash when the light is off

Why do LED lamps flash after turning off? To answer this question, you need to understand the main causes of the malfunction. There may be several, and each of them needs to be considered in detail.

Wiring problems

There may be two reasons:

• If you encounter the problem of a blinking light, first of all, you need to check where the phase wire from the distribution box comes to. It can go to the switch contact or to the LED device itself. The first case is considered the correct option - the phase wire must come to the contact of the switch. Otherwise, the electrical circuit will become at potential, which is why it will not be possible to get rid of the blinking of the lamp.

Important! Using an indicator screwdriver, you can easily distinguish between phase and neutral wires.

• If everything is okay with the first item, but, as before, the LED lamps flash after turning off, then the cause may be induced voltage or, more simply, network interference. A potential may appear on a disconnected wire if another power wire has already been laid in parallel with it.

Important! It is worth thinking about replacing the wiring in the case when the LED switch is controlled by a conventional switch that does not have a backlight. Otherwise, first you need to find out about other solutions to the described problem.

If the switch has a backlight

Replacing an incandescent lamp with a lamp connected to a backlit switch may result in short flashes with low power. So why do LED lights flash after turning off? The answer lies in the fact that in the de-energized state, the so-called microcurrent passes through the LED, which will be enough for tanning, but the charge is enough only for a short flash.

The described problem applies to all light bulbs having an electronic control unit. These bulbs are usually:

• LED light.
• Luminescent.

It is possible to remove unpleasant flashes using just a resistor or capacitor, which must be connected in parallel with the lamp. What to do to solve the problem:

1. Place the radio element inside the cartridge or on the back of the switch inside the cartridge - this is necessary for the convenience of further work.
2. In the first case, you will have to select a resistor with a power of 0.1 to 1 W. In dimensions, it is approximately three times smaller than the capacitor, and this is a useful factor, especially if space is limited. It is also worth noting the low cost of the resistor.
3. Otherwise, a capacitor whose capacitance is 0.1-1 μF will be needed. It is necessary for the element to be non-polar and able to withstand a voltage of 630 V. The best option would be to install a metal-film capacitor with “104-630V” written on its side.
4. If the switch is two-key, you will have to arm yourself with two elements for each group of bulbs, and only then remove the flickering of the LED lamps.

Important! Both of these elements are fire hazardous. During the procedure, you should not touch any wiring, as well as the body of electrical fittings.

If the lamp has several cartridges that are connected in parallel, then the problem is solved without the use of additional electrical elements. To do this, you can simply screw the light bulb with the power of your choice into the nearest lampshade. She will take the position of a shunt resistor.

Cheap fixtures

Often, users get inexpensive, which means poor-quality LED bulbs. This is due to the limited budget of citizens. A capacitor is usually connected to the power supply unit of such devices, the capacitance of which is about 4.8 μF - this also contributes to the blinking of the lamp.

Turn off the backlight

It is worth noting a great way, after applying which you will most likely forget about the question of how to eliminate the flickering of LED lamps. To do this, follow these steps:

1. Remove the switch.
2. Find his electrical contacts.
3. Remove the backlight.

Although this solution to the problem is radical, it is very simple and effective. The main thing is that you get rid of the annoying problem.

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Stock footage

In this article, we figured out the main malfunctions of the lamp and told what to do if energy-saving lamps flash after switching on. Following our advice, you will forget about this problem for a long time.