Why do led and smd lamps and corporate projectors break down and burn?

[electronium]

As you know, led and smd lamps and projectors may break down and burn after long use for 1 to 2 years, and the interesting thing is that this happens as soon as the warranty period and date expires. Why? How does this happen after 1 year? Why does it work for 1 year?

 

[danadak]

https://betterbuildingssolutioncenter.energy.gov/sites/default/files/attachments/lifetime_white_leds.pdf

https://www.osram.com/Graphics/XPic6/00102625_0.pdf

https://www1.eere.energy.gov/buildings/publications/pdfs/ssl/life-reliability_fact-sheet.pdf

The above may help.


Regards, Dana.