Why do LEDs seem to burn out rapidly in the tropics?

In the Philippines I have several times encountered samples of LED retrofits for T8 fluorescent lamps that exhibit dim yellow or burned out elements after only a few months. Since LED products are supposed to be longer lasting than fluorescent (and MUCH more expensive) could this be due to poor power quality (like... show more In the Philippines I have several times encountered samples of LED retrofits for T8 fluorescent lamps that exhibit dim yellow or burned out elements after only a few months. Since LED products are supposed to be longer lasting than fluorescent (and MUCH more expensive) could this be due to poor power quality (like voltage spikes), heat or what?
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