I have some blue Philips LED christmas lights that I was using as a
night light. After they were on 24/7 for a year a number of LEDs had
failed short circuit and the rest were 50-75% dimmer than new. I was
very disappointed with them. Ordinary light bulbs last longer than
that! They were either using cheap LEDs, or over driving them (or
both). Looking directly into the dim LEDs I could see large dark
areas on the dice.
Andy Cuffe


I have some too that have bad LEDs, they flickered horribly as well, one set
I modified with a rectifier and it was MUCH nicer looking then, it lasted a
couple years but now has one dim flickering LED. My friend gave me some more
sets which had not been modified and they have several more bad LEDs so it
isn't the rectifier that did it. I'm not impressed with LED Christmas
lights, they're just not there yet.