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Question:

Troubleshooting of LED light belt

Troubleshooting of LED light belt

Answer:

Mainly from the following aspects to identify:1, look at solder joints. Regular LED lamp manufacturers with LED light band produced by SMT patch process, produced by solder paste and reflow soldering. Therefore, the solder joint on the LED light band is smoother and the solder flux is not much, and the solder joint is in an arc shape extending from the FPC pad to the LED electrode.2, look at the quality of FPC. FPC points of copper and rolled copper two kinds, copper plate copper is protruding out, look carefully, from the pad and FPC connection to see. The rolling copper is closely connected with FPC, and can be bent at any time without the phenomenon of pad falling off. If the copper plate is bent too much, the pad will fall off and the temperature will be too high to cause the pad to fall off.3. Look at the cleanliness of the surface of the LED lamp. LED band produced by SMT process, its surface cleanness is very good, can not see what impurities and stains. Hand soldering process to produce a cottage version of the LED lamp band, no matter how the surface cleaning, will remain stains and traces of cleaning.4. Look at the packing. The regular LED lamp belt will be packed with an antistatic coil tray, 5 meters roll or 10 meters roll, and the outer packing will be sealed with anti-static moisture proof packing bag. LED version of the cottage version of the band with recycled reel, there is no anti-static moisture-proof package, a closer look at the reel, you can see the appearance of cleaning labels left traces and scratches.5. Look at the label. Regular LED lights, bags and rolls have printed labels, not printed labels.6, look at the attachment. LED lamp with formal will attach instructions and specifications in the lights inside the boxes, also equipped with LED lights with a connector or card holder; not the accessories and LED lamp with copycat version of the box, because some manufacturers still can be saved.
Packaging protection 1, LED lamp is not perfect, resulting in beads impacted and damaged during transportation.2, LED flexible light strip welding weld phenomenon in the process of transportation and vibration caused by soldering off caused light is not bright.3, LED flexible lamp with less solder, solder joints easily fall off4, LED flexible light band soldering quality is not good, LED flexible light band in the bending process, solder joints prone to cracking, peeling phenomenon5, LED flexible light belt installation when the bending angle is too large, resulting in LED flexible light strip solder joints and copper foil separation and lead to light6, LED flexible lamp belt when the installation of excessive extrusion products, leading to LED flexible light chip damage, or solder joint deformation off and not brightThick circuit board solder layer 7, LED lamp, welding solder and circuit board can not be completely fused together, is a kind of phenomenon.8, LED flexible light band in the installation can not be distorted, if distorted, it will cause LED flexible light strip of solder joints fall off and lead to not bright.9, electrostatic burn out, because LED is an electrostatic sensitive element, there is no good static protection measures, it will lead to chip burned. LED lamp belt market is intermingled, regular manufacturers and cottage products prices vary greatly. If professional and technical to identify the quality of LED light belt, I am afraid many customers do not have this ability. But we can make a preliminary identification from the simple appearance, which can basically distinguish between good and bad quality.

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