What should I do if the led bar behind the suspended led light is on and the front one is not?

Cause analysis of LED flexible light strip 8 not bright

After many tests and inspections, the LED flexible light strip will still not light up. The reason for this is the following：

1, the packaging protection of LED flexible light strip is not perfect, which leads to the impact damage of light beads during transportation.

2. There is a phenomenon of virtual welding in the solder joint of 2.LED flexible light strip, and the vibration during transportation causes the solder joint to fall off, resulting in the light strip not being bright.

3. The amount of solder in the 3.LED flexible light strip is small, and the solder joint is easy to fall off.

4. The solder quality of the LED flexible light bar is not good, and the solder joints of the LED flexible light bar are easy to crack and fall off when bending.

5. The bending angle of the LED flexible light strip is too large when it is installed, which causes the solder joint of the LED flexible light strip to be separated from the copper foil, resulting in dullness.

6. When installing the led flexible light strip, the product is excessively squeezed, which leads to the damage of the LED flexible light strip chip or the deformation and falling off of the solder joint.

7. The solder mask of 7.LED flexible light bar circuit board is too thick, and the solder and circuit board can not be completely fused together during welding, which is also a virtual welding phenomenon.

8. The 8.LED flexible light bar cannot be twisted during installation. If twisted, the solder joint of the LED flexible light bar will fall off, resulting in dullness.