What are some possibilities for early burn out of an LED? Even with commercial grade LED bulbs, you will find some duds. Poor design with sub-optimal parts (particularly heat sink) can result in an LED bulb burning out. Despite it being pretty clear on the box when buying a bulb, end users often put LED lamps that are not rated for enclosed fixtures in an enclosed fixture. Nothing causes the premature failure of an LED bulb quite like excess heat. Even with an enclosed-rated LED bulb, pay close mind to the size of the fixture.
Other issues can arise within a fixture that have nothing to do with the LED bulb itself. The wiring could be shot and causing connectivity issues. Cheaper, residential-grade fixtures wear down over time. Sockets in particular can become an issue if the LED bulb cannot connect properly. This results in irregular build-up of heat, and then the driver burns out and the lamp is not functional.