Led Christmas Light String Not Working

The fist step is to find the led that is no longer working.

Led christmas light string not working.

With the lights plugged in use the voltage detector to check the live voltage wire between each light starting at the end that plugs into the wall outlet. If after all the testing the light string still doesn t illuminate it s time to get some new lights. I have a bunch of noma led christmas light strings each with 70 leds. Check the entire strand of lights for a missing damaged or abnormal looking bulb according to the christmas light company website.

Christmas lights are the strings of little electric light bulbs often used on christmas trees or to decorate homes or yards. If you do not match the voltage properly it will change the color of the entire string of. When working correctly there is a wire shunt in the string that bypasses each of the individual light bulb sockets. With one string exactly half of the leds don t light up when plugged into the ac.

You may find that the bulb has a black or silver looking stain on the inside. 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. Pick which kind of led you will need. A wide range of strings are available but this article is about the new led bulb strings.

The non working led will obviously be in the string half that is not working. Sixty bulb led christmas lights are built from two half strings of 30 bulbs each. And if you re buying new lights consider upgrading to led christmas lights. This year however a bunch of the bulbs did not light up right in the middle of them all as my wife quickly informed me.

Some christmas light testers work by having you slide each christmas light bulb through a hole. Inspecting it closer i found it was half a string precisely. The whole string used to work and it s only about a year or two old. If none of the individual bulbs are faulty but the light string still refuses to light up there is a chance the shunt wires in the light string are faulty.

There are typically two different types of led bulbs that are used for christmas lights and they operate on different voltage levels. The christmas light tester will indicate which bulbs are bad and need to be replaced. Led stands for light emitting diode and the colors they produce are both stronger and purer than dye coated incandescent lamps. If this is your problem carefully replace the bulb after first unplugging the string of lights.

Blue green or clear lights use 3 2 volts while other colors will use 3 0 volts.