Some light strings may have two fuses.
How to check christmas lights that are out.
A multimeter provides a convenient way quickly to find the dead bulbs that will need to be replaced in order to restore your holiday decorations to their fully lit glory.
Slide this door open pry out the small glass fuse and examine it closely.
Second test the christmas light bulbs with an inexpensive tester available where holiday lights are sold and online usually changing a problem bulb or tightening it will fix the entire strand.
Twist the light bulb to check the connection.
Unfortunately they are also notorious for being among the most finicky holiday decorations.
This is rarely the problem but it only takes a second to check.
If the entire string is out you could possibly have a blown fuse.
If the bulb moved noticeably plug in the lights and see if a loose connection was causing the issue.
Assuming the bulb is still out continue to the next step.
Modern sets of mini lights have a small cartridge fuse found in the cord plug inside a small sliding door.
Christmas lights are one of the most iconic beacons of the holiday season.
Twist the light bulb gently to tighten it in position.
Check the fuse on the light string.
Use the light tester to check the first and last bulbs on the string sometimes these are not picked up during a sweep of the light strings and may be the culprit.
The joy of a beautifully lit home can quickly turn to frustration when a burned out bulb or two render an entire string of lights dark.
Check to see if the string has a fuse in the power plug.