![]() Unplug the strand then remove the burnt bulb, which will be the first in the dark section.Plug the strand to power to identify the burnt bulb and mark it.That means the shunt enables the bulbs to light through a faulty bulb. Incandescent bulbs ( they have a filament that glows when heated by electricity passing through it) have a shunt that allows the current to flow through the bulb base. Using a flathead screwdriver, pop out the fuse and replace it with a new fuse and close the hatch.Unplug the lights and slide the hatch open in the plug.Keep in mind that the dark section can have more than one burnt bulb, so check the whole section for burnt bulbs, mark them, and then replace them. The bulb that doesn’t respond to the tester is the burnt one. You can also use a voltage tester or light repair tool to test the bulb sockets for electrical current in the dark section. You can check for a blown bulb by plugging in the light set and checking for any bulb that isn’t lighting. One faulty bulb can knock out a whole section of Christmas lights, requiring a replacement with an identical bulb. Also, make sure you use the right size when replacing bulbs the wrong fit may not sit in the socket tightly.Ĭheck more how to tips and tricks on this Christmas Lights: Your Comprehensive Troubleshooting and How to Guide. Return the bulb to its socket, and these wires complete the circuit.Īlways tie your light sets around a cardboard piece during storage to prevent tangles and loose bulbs.Make sure they lay flat against the bulb on the outside.These wires should not be touching each other. Pull out the bulb from its socket and check for the two wires protruding at the bulb’s base.To check for loose bulbs, plug in the lights to power and shake the light set gently and you’ll notice flickering on the loose bulbs. ![]() Bulbs can loosen from their sockets during packing and unpacking.
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