What cause dead LEDs on LED strip lights

Sometimes there will be dark areas in the light boxes. When you open the canvas, there are several LEDs on the LED light strips. After using for a while, there are several LEDs can't work, which is the phenomenon of dead LEDs that people in the industry say. So what are the reasons for the dead LEDs?

Firstly, the quality of the LED lights is the direct cause of the dead LEDs. The use of inferior lamp beads will greatly increase the chance of dead LEDs of LED light bars. LEDs are composed of various materials, such as brackets, chips, wires, glues, etc. If any of these materials are low quality may cause LEDs to die prematurely.

Secondly, a LED or line on the serial-parallel circuit board is disconnected, causing the other LEDs to be off. This situation will affect the normal operation of the whole segment of the led lights. The reason is that due to the low working voltage of the led lamp, it is generally necessary to use string and parallel connection to adapt to different working voltages. The more LED lamps in series, the greater the impact, as long as one of the LEDs or one of the lines in this LED strip is disconnected, which will cause the entire LED light fixture.

Moreover, the wiring error also will cause the LED lights to burn out. If the LED low voltage tape lights are directly connected to 220V AC power will damage the lights. If the power supply is correct but the lights are not working, it may be because the positive and negative poles being reversed.

The last reason is that the physical damage during packaging, transportation, and installation. In the packaging, transportation, and installation of the LED light strip, various physical damages occur, causing the dead LED.