What is the reason why the LED does not light up
1, the reasons why the LED does not light up are as follows: the packaging protection of the LED light strip is not perfect, resulting in the impact of the lamp beads during transportation and damage. The welding point of the LED strip light has virtual soldering phenomenon, and the vibration during transportation will cause the solder joint to fall off and the light strip will not light up. LED light strip solder amount is small, and the solder joint is relatively easy to fall off.
2、Possible reasons are as follows. The power supply system is unstable. There is a part in the power circuit for the LED lamp that is damaged. The power switch that controls the LED light is not in contact. Solution: Restart the power supply system once and observe whether the LED light is normal. Take the lamp to a repair site for repair or replacement of the LED light.
3, the reason why the LED does not light up The welding point of the LED strip has virtual welding phenomenon, and the vibration during transportation causes the welding joint to fall off, resulting in the light strip not brightening. The quality of solder is not good, and the solder joint of the LED strip is easy to produce brittle cracking and falling off during the bending process.
4, the welding point has virtual welding phenomenon: this situation is generally caused by excessive vibration during the transportation of the lamp and the protection measures are not done, and its welding joint falls off with the vibration, and finally causes the lamp not to light up.
5、. It is not as bright as the same power, and the power of this lamp is a false mark. After using it for a short period of time, the brightness drops greatly and the quality of the lamp beads of this lamp is too poor. Suddenly only faint light is emitted, it may be that a dead light appeared in individual lamp beads.
6, the reason why the LED lamp does not light up is that the power supply is broken and the whole lamp does not work, and the other is that the lamp bead is dead. However, the general LED lamp beads are connected in series and parallel, so the general power supply will not be lit as a whole under normal conditions, and it may only be partially unlit.
What is the reason why the LED light does not light up? How to repair it? Let’s take a look at it
LED light does not light up Common faults and maintenance are as follows: the welding point of the LED light strip has virtual welding phenomenon, and the vibration during transportation causes the solder joint to fall off, resulting in the light strip not lighting up. The quality of solder is not good, and the solder joint of the LED strip is easy to produce brittle cracking and falling off during the bending process.
The reasons why the LED does not light up are as follows: The packaging protection of the LED light strip is not perfect, resulting in the damage of the lamp beads due to impact during transportation. The welding point of the LED strip light has virtual soldering phenomenon, and the vibration during transportation will cause the solder joint to fall off and the light strip will not light up. LED light strip solder amount is small, and the solder joint is relatively easy to fall off.
Possible causes are as follows. The power supply system is unstable. There is a part in the power circuit for the LED lamp that is damaged. The power switch that controls the LED light is not in contact. Solution: Restart the power supply system once and observe whether the LED light is normal. Take the lamp to a repair site for repair or replacement of the LED light.
LED panel light does not light up
1, LED light does not light up Common faults and maintenance are as follows: the welding point of the LED light strip has virtual welding phenomenon, and the vibration during transportation causes the solder joint to fall off, resulting in the light strip not lit. The quality of solder is not good, and the solder joint of the LED strip is easy to produce brittle cracking and falling off during the bending process.
2, the LED light does not light up, the revision method is as follows: first remove the lampshade and turn on the power to see which lights are not on. Mark well with a pen. After finding the lamp bead that is not lit, use pliers to pull off the lamp bead, taking care not to scratch the circuit board. Use wires instead of lamp beads, and prepare wires 4-5cm. Connect the soldering iron to the power supply to heat.
3, the switch is in poor contact: if the contact of the switch is not in contact, it will cause the light to flicker, at this time, we can turn the switch on, and then touch it with our hands to see if there is a bad contact, if there is, we can use a fine needle or toothpick, gently pick up some, and then plug it back in, you can solve it.
4, the reason why the LED light does not light up is nothing more than two situations: first, the leakage current of the LED causes the PN junction to fail, so that the LED lamp does not light up, which generally does not affect the work of other LED lights; Second, the internal connection leads of the LED lamp are disconnected, causing the LED to pass through without current and produce a dead lamp.
Causes and maintenance of LED lights not light up
1, LED lights do not light up Common faults and repairs are as follows: the welding point of the LED light strip has virtual welding phenomenon, and the vibration during transportation causes the welding joint to fall off, resulting in the light strip not brightening. The quality of solder is not good, and the solder joint of the LED strip is easy to produce brittle cracking and falling off during the bending process.
2, the switch is in poor contact: if the contact of the switch is not in contact, it will cause the light to flicker, at this time, we can turn the switch on, and then touch it with our hands to see if there is a bad contact, if there is, we can use a fine needle or toothpick, gently pick up some, and then plug it back in, you can solve it.
3, the lamp does not light up There are generally two reasons for this failure, one is the damage of the LED lamp T beads on the aluminum substrate of the lamp (LED lamp beads are connected in series, according to the laws of physics, once one is damaged, the entire circuit will be interrupted), and the other reason is that the constant current drive power supply of the lamp is damaged, resulting in the lamp beads not getting the working voltage.
The LED light does not light up, what is the reason?
What is the reason why the LED light does not light up The lamp beads are damaged If some of the lamp beads are not lit, it may be that the lamp beads are damaged, and this situation requires replacing the lamp beads with new ones. You can carefully observe the surface of the lamp bead, if there are black spots, it means that it is burned out.
First, the leakage current of the LED causes the PN junction to fail, so that the LED light does not light up, which generally does not affect the work of other LED lights; Second, the internal connection leads of the LED lamp are disconnected, causing the LED to have no current passing through and produce a dead lamp.
There is virtual welding phenomenon in the welding joint: this situation is generally caused by excessive vibration during the transportation of the lamp and the protection measures are not done, and its welding joint falls off with the vibration, and finally causes the lamp to not light up.
The reasons why the LED does not light up are as follows: the packaging protection of the LED strip is not perfect, resulting in the damage of the lamp beads due to impact during transportation. The welding point of the LED strip light has virtual soldering phenomenon, and the vibration during transportation will cause the solder joint to fall off and the light strip will not light up. LED light strip solder amount is small, and the solder joint is relatively easy to fall off.
What is the reason why the LED light does not light up
1, the reason why the LED does not light up is as follows: the packaging protection of the LED light strip is not perfect, causing the lamp beads to be damaged by impact during transportation. The welding point of the LED strip light has virtual soldering phenomenon, and the vibration during transportation will cause the solder joint to fall off and the light strip will not light up. LED light strip solder amount is small, and the solder joint is relatively easy to fall off.
2, there is virtual welding phenomenon in the welding point: this situation is generally caused by excessive vibration of the lamp during transportation and the protection measures are not done, and its welding joint falls off with the vibration, and finally causes the lamp to not light up.
- Possible reasons are as follows. The power supply system is unstable. There is a part in the power circuit for the LED lamp that is damaged. The power switch that controls the LED light is not in contact. Solution: Restart the power supply system once and observe whether the LED light is normal. Take the lamp to a repair site for repair or replacement of the LED light.Read more about this topic
