![]() If its too hard to line up the prongs, connect them with insulated wires. You should hear a click and see a spark each time. This is good news, and you don't need to do anything further, other than taking care not to plug in multiple high-voltage electrical items simultaneously in the same area of the house. Position the two prongs of the sparker against the two prongs of the Christmas light plug. The voltage drop is proportional to the resistance: Bulbs in. If the bulbs light back up, an overloaded and tripped electrical circuit was likely your problem. A 100 stringer in a 50 string will be dimmer, a 50 stringer in a 100 string will be brighter. You can often tell which circuit was tripped because the switch will be slightly out of alignment with the others. Some of the LEDs have their leads and/or the string wires corroded where they touch together. Its leads were not connected but were simply touching the wires of the string. I unscrewed the cover over an LED and the LED fell out. Once you locate the circuit you believe is tripped in the panel, move the switch all the way to the "off" position, and then to the "on" position. Either a bulb isnt making good contact in its socket (most likely on a string that hasnt been used much) or a shunt is not working. I found a string of Christmas tree LED lights that were thrown away. To do this, locate the labeled circuit in the metal circuit box panel, which is usually found in your home's utility room, basement, or garage. To check the circuit breaker, plug the lights into an electrical outlet. ![]() An overloaded electrical circuit - a situation where more electrical demand is placed on an outlet than it can handle - is the most common (and least serious) reason for this, he explains. If none of the bulbs in a string of Christmas lights work, and you also notice that other lights in the same section of the house go out, you've likely tripped the circuit breaker, says Bello. When to try it: When none of the lights work. Reset the circuit by turning the switch off and on again. ![]()
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