What is the reason why the unused LED light is not very bright for a long time?

The unused LED light is not very bright after a long time, and generally he puts it for a long time, and it causes the one inside to get wet, so it's not good, but if you just use it, it will also be bright.

The LED circuit is weakened, so that the resistance becomes larger and the current becomes smaller.

The solution is to increase the voltage appropriately, which requires the equipment to increase the voltage regulation, and cooperate with the control of the program.

<> damp. Air dry before use.

If you use the LED lamp for a long time, the LED lamp has an decay rate, and it will not light up for a long time.

Not only LED light sheets, but all household appliances will have this or that problem after a long time. This is a weakness in electrical appliances. It is possible that the connection is not smooth due to air, moisture, etc.

LED light piece for a long time, resulting in no light, most of the part is the result of corrosion, it is recommended to check the surface whether there is a breakdown or corrosion? Re-solder.

After a long time, the parts are aging, and of course they are not very bright.

And maybe the quality of your own LED light is relatively poor.

You can try a new light piece.

There could be something wrong with the computer, because he had a problem.

The reason why the unused LED light is not very bright for a long time is because the light inside has a short circuit.

The lights don't turn on when they are turned on, and they don't turn on for a while for the following reasons:

1. If the light does not light up after the power is turned on, and suddenly turns on in a few seconds, this situation is a ballast failure.

2. If the light flashes after the power is turned on, it means that there is a problem with the starter (that is, the bubble jump).

3. Then there is the broken lamp.

4. Let the round liquid line be in poor contact.

It is recommended to replace a driving power supply with the same parameters on this lamp first, and replace a driving power supply if it can emit light normally; If the power supply is replaced, it is still not possible, and the light source needs to be replaced.

It will not affect the life of the lamp.

There are several reasons why the LED light is slightly lit after the lights are turned off:

First, the switch controls the neutral line. This is one of the more common reasons, the electrical line switch controls the neutral line, or the electrical box enters the neutral line to fire back. The switch controls the neutral line, which is still connected to the fixture and emits a shimmering light.

Solution: Adjust the wiring so that the switch controls the live wire.

Second, the wrong connection method of the double control switch. There are several ways to connect the dual control switch, if the connection is wrong, the light will turn off and be slightly bright.

Solution: Re-wire according to the normal control fire wiring method.

3. The switch has an indicator light and an electronic switch. There is an indicator light inside this switch. When the light goes out, a faint current flows through it. For example, lamps and lanterns use electronic switches, such as infrared, voice, remote control switches, etc. Even when the lights are off, they will still come on.

Solution 1: Replace the switch.

Scheme 2: Connect 500k resistors in parallel at the inlet part of the lamp. However, this method has high technical requirements and is inconvenient for non-professionals to operate. It is ineffective for the weak light caused by the charge of the neutral line or the leakage of the patch.

Fourth, the drive is not isolated, the light source patch and the substrate leakage. Many luminaires have leakage on the patch and substrate due to the cost of the drive resistance and capacitance of the differential voltage drop, or the poor quality of the light source patch. The copper coating of the substrate and the capacitive effect of the substrate can also cause light leakage.

That's why some of the lights in the room don't come on.

Solution: Change the lights and try your luck.

Fifth, the zero line is electrified, in fact, the light emitted after the zero line is charged is the most fundamental reason. If the control switch is a live wire, use a normal wall switch, or a light, it is a live neutral wire. Zero-line charges are common.

If the neutral line is not well grounded, the transformer three-phase load is unbalanced, the line is too long, the line diameter is too thin, or the neutral line current is too large, it will cause the neutral line to be electrified.

Solution: Re-ground the neutral line or low-voltage transform.

The reason why the LED light is turned off and keeps it slightly bright:

1. The switch controls the zero line.

This is a relatively common reason, when the electrician is wiring, the switch controls the neutral line, or the zero fire is reversed when the electrical box enters the line. The switch controls the neutral wire, and the live wire is still connected to the lamp, which will emit a faint light.

2. The dual control switch is connected incorrectly.

There are several wiring methods for the dual control switch, and if the wrong connection is used, it will also turn off the light and light up slightly.

3. The switch has an indicator light and uses an electronic switch.

There is an indicator light inside the switch, and there will be a slight current flow after the light is turned off.

If the luminaire uses electronic switches, e.g. infrared, voice-activated, remote switches. There will also be a shimmering glow when the lights are turned off.

4. Non-isolated drive, light source patch and substrate leakage.

Many lamps and lanterns are driven by inferior resistance and capacitance for cost reasons, or the quality of the light source patch is poor, and there is leakage of the patch and substrate. Substrate copper clad and substrate capacitance effects can also cause light leakage. That's why in a room, the lights are on and off.

5. The zero line is electrified, in fact, the zero line is charged is the most fundamental reason for the light to shine after turning off the light.

If the switch controls the live wire, uses an ordinary wall switch, or emits light, the neutral wire is electrified.

It is a very common phenomenon that the neutral line is electrified. If the neutral line is not well grounded, the transformer three-phase load is unbalanced, the line is too long, the wire diameter is thin, or the neutral line current is too large, it will cause the neutral line to be electrified.

Solution: 1. Adjust the wiring and let the switch control the live wire.

2. Install the normal control live wire connection method and rewire.

3. Connect 500K resistors in parallel at the inlet part of the lamp. However, this method is technically demanding and not easy for non-professionals to operate. And it is ineffective for the neutral line to be charged, or the glimmer caused by the leakage of the patch.

4. Re-grounding the zero line or carrying out low-voltage transformation.

The lights are off and still faintly on? The old electrician will teach you 2 reliable solutions!

No, it will not affect the life of the lamp. Is there an inductance in the circuit, if there is an inductance, then the LED will slowly go out, according to Lenz's law, the inductor will induce an electromotive force in order to prevent the change of magnetic flux, and supply power to the LED, with the loss of the circuit, the voltage will slowly decrease, and the LED will gradually go out, which is the same as the general voltage source is cut off 220V electricity, and the pointer of the voltage source will slowly drop to zero.

It must have an impact on the lamp, that is because most of the lights are now in Zhongshan Ancient Town, Guangzhou, where most of the drivers are semi-isolated drives, slightly bright because the LED is too sensitive to electricity, you can try to adjust the position of the live wire and the neutral line, if it doesn't work, it is a problem with your home line, If the normal lamp service life is 2 years, then your home is at most 1 and a half years.

This phenomenon was prevalent in previous energy-saving lamps.

But in LED lamps, these can be eliminated, but why this happens, this is a problem with the control circuit, there is a residual current released by the electrolytic capacitor in the circuit.

Generally, it does not affect the life expectancy.

But it affects the senses. Doesn't feel normal. At present, some lamps and lanterns use the output of IC integrated control current to control the switch of each LED lamp bead, and this phenomenon will not occur, but the cost will be more expensive, and it can only be said that the lamps and lanterns bought are ordinary.

What brand?

Some with remote control is a sectional switch, you turn it off, not necessarily all off, may leave the last slight gear, you try again, the switch is on and off one or two seconds between the time you press it many times to see if there is a different light source.

If it is a faint red light, it should be that the lamp bead is burned out, and the burned lamp bead affects the total current of the circuit. Give you a reference map, take a closer look, the circled is bad, and the difference between the good can still be seen, if you will weld the necrotic lamp beads to try it.

It is estimated that it is a very cheap LED lamp, maybe the quality of the LED lamp beads is not good, and if the power supply part is a simple RC step-down, it will cause the LED lamp beads to age quickly and the light decay fails.

Only buy new ones, don't be greedy for bargains.

If it is suddenly not very bright, it is generally caused by the quality problem of its heart, the LED drive power supply, and the current is not enough. You can take it apart to see the number of strings and power of the LED lights, find a professional power supply company to distribute the power supply, and connect the input and output lines yourself. If it is troublesome, it will be returned to the manufacturer for maintenance, which should be a trivial problem for the manufacturer.

If you use it, it doesn't seem to be very bright, not suddenly not very bright, it's the quality of the LED lamp beads - the light decay is too great. If there are many small lamp beads on a lamp, it is unlikely to be repaired in this case, and the cost and cost are too great, so they can only be replaced directly. If there is only one high-power lamp bead and COB encapsulated LED, you can buy it back and replace the lamp bead without too much trouble.

The driver is broken, and there are two kinds of drivers, one is the low-cost resistor-capacitance drive; One is a constant current drive that is expensive and has many components and is composed of coils and integrated circuits. The power consumption of constant current drive is about 50% smaller than that of resistor-capacitance drive. LED lamp beads are divided into a single string, double and multi-parallel, and the driver is matched respectively, if the match is improper, it will cause the lamp beads to hit the string or drive to destroy, resulting in a shortened lamp life, and the price is low to buy a good product.

It's the internal electronic ballast that's broken. Or repair, or replace.

Check whether the LED lamp beads are burned out.

Summary. Hello dear, the reason why the LED light strip does not light up after an hour: 1. The welding point of the LED flexible light strip has a virtual welding phenomenon, and the vibration during transportation causes the solder joint to fall off and the light strip does not light up.

2. The LED flexible light strip is over-squeezed during installation, resulting in damage to the LED flexible light strip chip or deformation and falling off of the solder joint. 3. The LED flexible light strip cannot be twisted during installation, if it is twisted, the solder joint of the LED flexible light strip will fall off and cause it to not light up. 4. The solder quality of the LED flexible light strip is not good, and the solder joints of the LED flexible light strip are easy to crack and fall off during the bending process.

6. The amount of solder of the LED flexible light strip is small, and the solder joints are easy to fall off 7. The bending angle of the LED flexible light strip is too large during installation, resulting in the separation of the LED flexible light strip solder joint from the copper foil, resulting in no light 8. The solder mask of the LED flexible light strip circuit board is too thick, and the solder and the circuit board cannot be completely fused together during soldering, which is also a virtual soldering phenomenon.

Hello dear, the reason why the LED light strip does not light up after an hour of travel: 1. The welding point of the LED flexible light strip has a virtual welding phenomenon, and the vibration during transportation causes the solder joint to fall off and the light strip does not light up. 2. The LED flexible light strip is over-squeezed during installation, resulting in damage to the LED flexible light strip chip or deformation and falling off of the solder joint.

3. The LED flexible light strip cannot be twisted during installation, if it is twisted, the solder joint of the LED flexible light strip will fall off and cause it to not light up. 4. The solder quality of the LED flexible fiber light strip is not good, and the solder joints of the LED flexible light strip are easy to be brittle and fall off during the bending process. 6. The amount of solder in the LED flexible light strip is small, and the solder joints are easy to fall off 7. The bending angle of the LED flexible light strip is too large when it is installed, resulting in the separation of the LED flexible light strip solder joint and the copper foil, resulting in no light 8. The solder mask of the LED flexible light strip circuit board is too thick, and the solder and the circuit board cannot be completely fused together during soldering, which is also a kind of virtual soldering phenomenon.

The back opened and lit up again.

There is a virtual soldering phenomenon at the welding point.

Just re-solder.

Hello, the LED strip light will not light up for an hour.

First, before the solder quality is unqualified, the LED strips of some manufacturers are unqualified. The amount of solder in the light strip is small, and the solder joints are easy to fall off. If the solder quality of the LED strip is not good, the solder joints of the LED strip are prone to brittleness and detachment during the bending process.

Second, the packaging protection of the LED light strip damaged by transportation is not enough, and the lamp beads may be damaged by impact during the transportation of Changtong. The welding point of the light strip has a virtual welding phenomenon, and the vibration during transportation causes the solder joint to fall off and the light strip does not light up. 3. Installation damage 1. The bending angle of the light strip is too large during installation, which causes the LED light strip solder joint to be separated from the copper foil and causes it to not light up.

2. The product is excessively squeezed during the installation of the light strip, resulting in damage to the LED light strip chip or deformation and falling off of the solder joint. Note: The light strip should not be twisted excessively during installation, if the light strip is squeezed too violently, the solder joints of the LED light strip will fall off the field or break the board, resulting in no light.