how to find broken bulb on christmas lights

If you have a string of Christmas lights that are not working, you can use a simple method to find the broken bulb. The first step is to turn off the power to the lights and unplug them from the outlet. Next, you'll need to remove one of the bulbs from the string and hold it up to a light source, such as a window or a flashlight. If the bulb is broken, it will appear darker or dimmer than the others. You can then replace the broken bulb with a new one and test the lights to see if they're working properly.