To troubleshoot in this scenario start by swapping the first bulb in the strand with a new bulb preferably one you know works such as a borrowed bulb from a working strand of lights.
Easiest way to troubleshoot christmas lights.
Pull up from the plastic seat of the bulb not the bulb itself.
New christmas light fuses are available where christmas lights are sold and at some electronics stores.
The tool comes in a kit form that includes extra light bulbs a continuity tester and even a battery tester for testing various batteries.
Changing a bad bulb.
If not you must remove the new bulb plug in the original bulb and continue to the second socket.
I also tried a light keeper pro to get a string of lights working.
The lightkeeper pro is a trigger operated tool that sends a pulse of current through the light string to identify the faulty light bulb and repair the shunt.
Please note that this method helps with blown bulbs and n.
If the strand lights great you have solved the problem.
I could never guess but you can repair your christmas tree lights quite easily using this method.
The best option is to use either an electrician s multimeter or a tool specifically designed for repairing christmas lights such as the lightkeeper pro.
First slide back the plastic covering on the plug to check the christmas light fuse.
Replace any blown christmas light fuses.
Sometimes that makes more sense and can work even faster but it can t always repai.
Finding the dead bulb storebought tools.
How to fix christmas lights method 1 of 4.
Some christmas light strings have more than one fuse in which case they ll be next to each other.
Most of these tools include.
Check out our recommendations for the best extension cords for outdoor christmas lights displays.
Replacing a blown fuse.
Remove corrosion from the plug prongs and plug the string in again.
Buy a christmas light repair tool.
How to fix christmas lights that are half out method 1 of 4.
A blown fuse will turn the entire string.