How to distinguish the quality of LED flat Lamp
1, the correct way to distinguish the quality of led lamps and lanterns is as follows: look at the appearance of LED lamps and lanterns can be compared with multiple lights together, lamp shape and size consistency is better for large-scale production products, formed by machine bending, product consistency is good, quality is more guaranteed, and interchangeability during maintenance is better.
2. Check whether the led lamp can be lit. If it is not lit, it is normal to measure the position of the two stylus interchangeably. If the led lamp is not lit by two measurements, the led lamp is broken.
3. The simple detection method of led lamp quality is as follows: looking at the appearance is the simplest way to determine the quality. First of all, it is necessary to observe whether the outer packing is regular. Whether there is a factory address, trademark, certificate, CCC qualification certificate, etc. Secondly, check the quality of electric lamp materials, mainly observe the wiring technology, backplane materials and mask quality.
4, how to judge the quality of LED lamp good or bad brand choice should choose famous brand or trademark with “R” has been registered enterprise products, LED lamp appearance is beautiful, product trademark, model, specification printing handwriting is clear and beautiful, there should be no deformation off paint, color inequality.
How to identify the quality of LED light strip
1. If we want to buy a good led lamp strip, we must first see if the solder joint of the led lamp bar is intact.
2. There is no doubt that the direct power-on test is the fastest. (if there is no suitable power supply, you can do the lighting test by stages.) you can also use the multimeter diode file to measure, and visually observe all the lamp beads. As long as there is a black spot in the center of any one of the lamp beads, the whole lamp bar cannot be used.
3. A, use a universal red pen to connect the positive contact of the LED lamp bead, and use a universal meter black pen to connect the negative contact. When the LED lamp bead has a small brightness, it is good, otherwise it may be bad.
How to identify the quality of led Lamp Strip
1. If we want to buy a good led lamp strip, we must first see if the solder joint of the led lamp bar is intact.
2. LED lamp belt quality identification method to see the solder joint. Regular LED lamp tape manufacturers produce LED lamp strips using SMT patch process, solder paste and reflow soldering process. Therefore, the solder joint on the LED lamp belt is relatively smooth and the amount of solder is not much, and the solder joint extends in an arc from the FPC pad to the LED electrode.
3. A, use a universal red pen to connect the positive contact of the LED lamp bead, and use a universal meter black pen to connect the negative contact. When the LED lamp bead has a small brightness, it is good, otherwise it may be bad.
4. There is no doubt that the direct power-on test is the fastest. (if there is no suitable power supply, you can do the lighting test by stages.) you can also use the multimeter diode file to measure, and visually observe all the lamp beads. As long as there is a black spot in the center of any one of the lamp beads, the whole lamp bar cannot be used.
