how to fix christmas lights on prelit tree

Hmm, sounds like you're having trouble with your prelit tree. Let's see if we can figure out what's causing the issue. First, check to see if the fuse in the power cord is blown. If it is, simply replace the fuse and you should be good to go. If the fuse is fine, then you may need to check the wiring inside the tree. Make sure all the wires are properly connected, and that none of them are loose or damaged.