how do you fix broken christmas tree lights

If you have a strand of Christmas lights that aren't working, first check to see if there's any visible damage or loose connections. If everything looks okay, try plugging them in and testing each bulb to see if there's a specific one that's causing the issue. If there is, try replacing it with a new bulb. If that doesn't work, you may need to replace the entire strand of lights. It's also a good idea to check the power supply to make sure it's working properly.