Each year, my family decorates our Christmas tree with fairly normal red, orange, green, and blue small LED lights. However in recent years, I've been noticing that there has been a section that has failed, and they're starting to get a little flicker like a 60hz flicker. There's also just been general dimming out of a few ones (especially the blues). The lights are from 2005-2007 (there's a mix). Are they/their drivers starting to reach their EOLs?