1. The packaging protection of the LED light bar is not perfect, causing the lamp beads to be damaged by impact during transportation.
2. The solder joints of the LED light bar have virtual soldering phenomenon, and 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 soldering tin quality of the LED light bar is not good, and the solder joints of the LED flexible light bar are prone to brittle cracks and fall off during the bending process.
5. When the LED light bar is installed, the bending angle is too large, causing the solder joint of the LED flexible light bar to separate from the copper foil and cause no light.
6. Excessive squeezing of the product during the installation of the LED light bar may cause damage to the LED flexible light bar chip or the deformation of the solder joints and fall off.
7. The solder mask of the LED light bar circuit board is too thick, and the solder and the circuit board cannot be completely fused together during soldering, which is also a kind of virtual soldering phenomenon.
8. The LED light bar cannot be twisted during installation. If it is twisted, it will cause the solder joints of the LED flexible light bar to fall off and cause no light.
