If you've had one for a few years, you may already know where this is going. We've had one for five years now, and for three of them I put it up without any problem. Last year a couple of half-strings of lights went out. No problem. I replaced a fuse in one set, and for the other I got that tool that you're supposed to use to repair the lights. Worked, too. For a time. The day before we were supposed to pack the tree away, another half of a string went out. I noticed that all the lights that were out were burned out (blackened). I'd have to replace 50 bulbs, in addition to figuring out what blew them out. Since it was time to put the tree away, I opted to do that and fight another day. Wellsir, this year I pulled the tree out and not only is that section out, but another one is as well. There are two other sections which are overly bright, which means the current from a few burned-out lights is being shunted to the remainder, and that tells me I would need to hunt down those burned-out lights and replace them...not as easy a chore as it sounds, if you've ever tried to follow the strings of a pre-lit tree. Oh, and there's another section I found which is all blackened. If you're keeping score, that's seven out of 15 or so strings I've already had problems with. Watching this pattern unfold, I figure this ship is taking on water faster than I can bail. So I've opted to remove all the lights from the tree and replace them with completely new ones. It's either that, or continue to chase problems, which will be even more difficult to fix once all the ornaments are on the tree. Or chuck the tree and buy a new one. I worked on removing the lights for the better part of the day yesterday, but they're secured so tightly that my hands are getting raw from rubbing against the "needles" trying to undo them. So I guess the moral of the story is, beware how good those trees look in the store. I myself would never buy another one. I strung the lights on by hand for years, and let me tell you, doing that is much less of a pain than trying to remove them from a pre-lit tree.