Why are half of my Christmas lights out and how can I fix them?
Half of your Christmas lights may be out due to a loose bulb, a damaged wire, or a blown fuse. To fix them, start by checking each bulb for tightness and replacing any that are loose or broken. If that doesn't work, inspect the wires for any damage and replace them if necessary. Finally, check the fuse in the plug and replace it if it's blown.