Sometimes a section of your Christmas lights may not light up. If this happens, try some simple troubleshooting.
Today’s light sets are made so that the remaining lights will work, even if one burns out. You can remove and/or replace the burned out bulb or leave it in. However, a bulb that is only partially inserted in its socket may cause part or all of the strand to fail. Check that all bulbs are firmly set into their sockets and retry.
Remove the bulb and adjust the wire if necessary to see if the bulb wires are making proper contact.
If neither of our troubleshooting tips solves the problem, you may want to replace the strand or try one of our light testing products.