Try this if the entire string goes out.
Best way to troubleshoot christmas lights.
A blown fuse will turn the entire string.
The job is easier with a christmas light bulb tester an inexpensive little tool that you can buy online or from many hardware stores.
New christmas light fuses are available where christmas lights are sold and at some electronics stores.
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.
Replace any blown christmas light fuses.
If the strand lights great you have solved the problem.
Most of these tools include.
In older lights strings though a single dead bulb may cause the entire string to go dark.
Buy the led keeper.
Check out our recommendations for the best extension cords for outdoor christmas lights displays.
Step 2 locate the two wires on the bottom of the bulb and touch a probe to each wire ensuring that the probes do not touch each other or more than one wire.
Some christmas light strings have more than one fuse in which case they ll be next to each other.
Buy a christmas light repair tool.
If not you must remove the new bulb plug in the original bulb and continue to the second socket.
If a bulb is burnt out fixing it means replacement.
Https amzn to 2jhduoq amazon associate link this video is a follow up to my original how to fix christmas lights video.
The same goes for bad fuses bad light sockets or even bad wires.
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.
Begin at one end of the darkened string of christmas lights and carefully remove the first bulb.
Here it can be quite time consuming to replace individual bulbs until you find the culprit causing the problem.
The best way to save lights for another year seems to be toput each string into a separate plastic zip bag so they willnot get tangled or dusty.
Finding the dead bulb storebought tools.