how do i fix led christmas lights

Fixing LED Christmas lights depends on the problem. If the light bulb has burned out, you will need to replace the bulb. If the light string has a loose connection, you can tighten it with pliers. If the light string has a short in it, you will need to find the short and fix it. If the light string has a broken fuse, you will need to replace the fuse. If the light string is not working at all, you may need to replace the whole string.