1. The packaging protection of the LED light strip is not perfect, causing the lamp beads to be damaged by impact during transportation.
2. The solder joints of the LED light bar have a phenomenon of virtual soldering. The vibration during transportation causes the solder joints to fall off and the light bar does not light up.
3. The LED light bar has a small amount of solder, and the solder joints are easy to fall off.
4. The quality of the soldering tin of the LED light bar is not good, and the solder joints of the LED flexible light bar are prone to brittle cracking and falling off during the bending process.
5. When the LED light bar is installed, the bending angle is too large, which causes the solder joint of the LED flexible light bar to be separated from the copper foil, resulting in no light.
6. When the LED light bar is installed, the product is excessively squeezed, causing the LED flexible light bar chip to be damaged or the solder joint to be deformed and fall off without lighting.
7. The solder mask layer of the LED 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 phenomenon of virtual soldering.
8. The LED light bar cannot be twisted during installation. If it is twisted, the solder joints of the LED flexible light bar will fall off and cause no light.