Everyone in today's life is equipped with LED lights. When the led lights are turned on, they will emit various colors of light. It is very beautiful. Many people are loyal to led lights. In the process of using LEDs, there is often a flash. In the case of flashing, what is the reason for this? Next, we will explore the causes and solutions of the LED flashing.
The Reason Why The LED Light Flashes
1, LED lamp beads and LED drive power supply do not match, normal single foot 1W lamp beads withstand current: 280-300mA, voltage: 3.0-3.4V, if the lamp bead chip is not enough power will cause the light source strobe phenomenon, When the current is too high, the lamp bead can't withstand and it will be turned on and off. In serious cases, the gold wire or copper wire built in the lamp bead will be blown, resulting in the lamp bead not shining.
2. It may be that the drive power supply is broken. Just replace it with another good drive power supply and it will not flash.
3. If the drive has over-temperature protection function, and the thermal performance of the material of the luminaire cannot meet the requirements, the drive over-temperature protection will start to work, for example, the 20W floodlight cover is used to assemble the 30W luminaire. This is the case if the heat dissipation work is not done well.
4. If the outdoor lighting also has a strobe light, the light is in the water. The consequence is that it will not light up when it flashes. The lamp bead and the drive are broken. If the drive is waterproof, if it is good, it will just break the lamp bead and replace the light source.
LED Lamp Maintenance Inspection Steps Are as Follows:
1. Before turning on the LED, measure the voltage of the power supply and the current flowing through the LED.
2, then disassemble, check all the key parts: drive or power supply, LED lamp beads, and all the broken lamp beads are replaced.
3, to find out the cause of LED lamp bead damage, if the current is too large, immediately reduce the drive current, and at the same time check the drive for faults, choose to repair or replace.
LED Energy-Saving Lamp Fault Repair Skills
1. Commonly, the resonant capacitor C6 breakdown (short circuit) or withstand voltage drop (soft breakdown) should be replaced with high-quality polyester or CBB capacitor of the same capacity with a withstand voltage above 1kV.
2. The lamp filament is open. If the lamp is not seriously blackened, it can be used in emergency after connecting 0.047μF/400V polyester capacitor at both ends of the broken wire.
3.R1, R2 open circuit or variable value (generally R1 failure is more likely), replace with the same resistance value of 1/4W high-quality resistor.
4. The triode is open. If only one triode is found to be open, but one cannot be replaced, a pair of matching switches of the same type with a withstand voltage of 400V or more should be replaced. Otherwise, it is easy to roll the light or burn the tube again.
5.the lights flashing non-stop. If the lamp is not seriously black, check whether D5 or D6 has a virtual weld or open circuit. If the D5 or D6 soft breakdown or the filter capacitor C1 leaks and is bad, the light will flash continuously.
6.the lamp is difficult to light, sometimes touch the lamp with the hand can light up or light roll, this may be C3, C4 capacity is insufficient, no pairing.
7. If the filament has redness or luminescence after the single low-power energy-saving lamp is lit, it should also check whether D1～D4 have a soft breakdown, whether C1 is leaked, and whether there is a short circuit in the power supply part.
8. The core of the choke coil L and the oscillating transformer B is broken. If you change the core, you should pay attention to three points: (1) Use the magnetic core that meets the requirements. Otherwise, the inductance value of the choke coil may be greatly different, and the energy-saving lamp may be buried. (2) The magnetic gap should not be too small to avoid Magnetic saturation; (3) After the magnetic gap is padded with a suitable pad, it has adhered with an adhesive and wrapped with a high-temperature resistant flame retardant tape to prevent loosening. In addition, the same name of B cannot be wrong.
9. Overhaul the electronic ballast using the trigger tube. The bidirectional trigger diode should be inspected. This tube is generally DB3 type, and its bidirectional breakdown voltage is 32±4V.
If you are unfamiliar with LED lights or have safety hazards, contact your local electrician for inspection.
Regarding led lights, you may be interested in the following:
《5 Ways To Maintain LED Lights》
《3 Types of LED Lighting Problems And Solutions》
《How To Choose A High Quality LED Corn Lights》
The Reason Why The LED Light Flashes
1, LED lamp beads and LED drive power supply do not match, normal single foot 1W lamp beads withstand current: 280-300mA, voltage: 3.0-3.4V, if the lamp bead chip is not enough power will cause the light source strobe phenomenon, When the current is too high, the lamp bead can't withstand and it will be turned on and off. In serious cases, the gold wire or copper wire built in the lamp bead will be blown, resulting in the lamp bead not shining.
2. It may be that the drive power supply is broken. Just replace it with another good drive power supply and it will not flash.
3. If the drive has over-temperature protection function, and the thermal performance of the material of the luminaire cannot meet the requirements, the drive over-temperature protection will start to work, for example, the 20W floodlight cover is used to assemble the 30W luminaire. This is the case if the heat dissipation work is not done well.
4. If the outdoor lighting also has a strobe light, the light is in the water. The consequence is that it will not light up when it flashes. The lamp bead and the drive are broken. If the drive is waterproof, if it is good, it will just break the lamp bead and replace the light source.
LED Lamp Maintenance Inspection Steps Are as Follows:
1. Before turning on the LED, measure the voltage of the power supply and the current flowing through the LED.
2, then disassemble, check all the key parts: drive or power supply, LED lamp beads, and all the broken lamp beads are replaced.
3, to find out the cause of LED lamp bead damage, if the current is too large, immediately reduce the drive current, and at the same time check the drive for faults, choose to repair or replace.
LED Energy-Saving Lamp Fault Repair Skills
1. Commonly, the resonant capacitor C6 breakdown (short circuit) or withstand voltage drop (soft breakdown) should be replaced with high-quality polyester or CBB capacitor of the same capacity with a withstand voltage above 1kV.
2. The lamp filament is open. If the lamp is not seriously blackened, it can be used in emergency after connecting 0.047μF/400V polyester capacitor at both ends of the broken wire.
3.R1, R2 open circuit or variable value (generally R1 failure is more likely), replace with the same resistance value of 1/4W high-quality resistor.
4. The triode is open. If only one triode is found to be open, but one cannot be replaced, a pair of matching switches of the same type with a withstand voltage of 400V or more should be replaced. Otherwise, it is easy to roll the light or burn the tube again.
5.the lights flashing non-stop. If the lamp is not seriously black, check whether D5 or D6 has a virtual weld or open circuit. If the D5 or D6 soft breakdown or the filter capacitor C1 leaks and is bad, the light will flash continuously.
6.the lamp is difficult to light, sometimes touch the lamp with the hand can light up or light roll, this may be C3, C4 capacity is insufficient, no pairing.
7. If the filament has redness or luminescence after the single low-power energy-saving lamp is lit, it should also check whether D1～D4 have a soft breakdown, whether C1 is leaked, and whether there is a short circuit in the power supply part.
8. The core of the choke coil L and the oscillating transformer B is broken. If you change the core, you should pay attention to three points: (1) Use the magnetic core that meets the requirements. Otherwise, the inductance value of the choke coil may be greatly different, and the energy-saving lamp may be buried. (2) The magnetic gap should not be too small to avoid Magnetic saturation; (3) After the magnetic gap is padded with a suitable pad, it has adhered with an adhesive and wrapped with a high-temperature resistant flame retardant tape to prevent loosening. In addition, the same name of B cannot be wrong.
9. Overhaul the electronic ballast using the trigger tube. The bidirectional trigger diode should be inspected. This tube is generally DB3 type, and its bidirectional breakdown voltage is 32±4V.
If you are unfamiliar with LED lights or have safety hazards, contact your local electrician for inspection.
Regarding led lights, you may be interested in the following:
《5 Ways To Maintain LED Lights》
《3 Types of LED Lighting Problems And Solutions》
《How To Choose A High Quality LED Corn Lights》
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