Some christmas light testers work by having you slide each christmas light bulb through a hole.
Led christmas lights half strand out.
Incandescent christmas tree lights aka mini lights are wired in series so if your lights go partially out you have one of three issues.
If this is your problem carefully replace the bulb after first unplugging the string of lights.
I hade the same problem on a set of ge led lights.
A light bulb has come out of its socket or is half out of its socket and it has brought down the circuit.
As the link cannot carry on further than the busted bulb.
The christmas light tester will indicate which bulbs are bad and need to be replaced.
I put a new bulb in and boom fixed.
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.
Thanks to everyone for the help.
Sixty bulb led christmas lights are built from two half strings of 30 bulbs each.
Check the entire strand of lights for a missing damaged or abnormal looking bulb according to the christmas light company website.
People actually suggested cutting out the offending half string and patching in another one.
And if you re buying new lights consider upgrading to led christmas lights.
I d try and replace the first dead bulb or if you can t find replacements you could try just linking the connectors by shorting them and.
If after all the testing the light string still doesn t illuminate it s time to get some new lights.
I took out each light staring at the end and i found one with a wire broken off of the bulb.
The first several search results made me gag.
Second half of strand was out.