How do you fix Christmas tree lights when half string is out?.What do you do when half a strand of Christmas lights go out?.The fuses are intended to melt or “blow” before the copper wires in the string could melt or cause a fire from overload. Typically, these strings of lights have two tiny fuses, one in each side of the AC line, located inside the AC plug. Why are there two fuses in Christmas lights?įuse Faults. Usually there is a trap-door in the plug to open and access the fuses, or there may be a section that pulls out. Like the incandescent strings before them, the LED strings have a fuse in series with each side of the AC line, located in the plug. Many times the bulb will be “smoked” as well. You can tell which bulb is out on your string of traditional Christmas lights by looking for the bulb that is “burned out” by looking at the tiny little filaments in the light bulbs to see which bulb is “burned out” or has lost it’s filament. How can you tell which bulb is blown on Christmas lights? That means pulling off each bulb, replacing it with a good bulb, and plugging it in. However, if the entire string of lights is out, you will need to check every lightbulb. Sometimes only a section of the lights will go out, making your job pretty easy. The only way to fix the problem is to find the bad bulb. The dead section of wire will be the section after your bad bulb. If you have a non-contact voltage detector, bring the detector close to the wire section between each bulb to test for voltage. The tester’s indicator will light up when it’s near a functioning bulb. Simply bring the light tester close to each bulb. How do you know which bulb is bad on LED Christmas lights? These tiny connectors are rather delicate items so you have to be very careful when inserting them. Most likely, the pin is not inserted correctly. Why is one part of my LED lights not working?īad Pin Connection – If your LED strip light fails to turn on at all, then check your pin connections. Learning how to change a fuse in Christmas lights is simple: Open the sliding compartment door and remove the fuse(s). You can sometimes tell by sight if a fuse has blown the metal filament inside the glass cylinder will have a break in it. How do I know if my Christmas light fuse is blown? The resistance in these conductors adds up – and your LEDs start to operate below their optimal voltage range, resulting in dimming. Voltage drop comes into play when your LED strip runs, your wiring, or both, are too long. If they don’t, put the bulb back in and move on to the next one. If the lights come on, you know that’s the bad bulb. Pull out one bulb at a time, and stick a piece of folded up foil into the bulb socket. How do you fix half Christmas lights without a tester? If it flickers, that’s your cue to replace it. Start with the first unlit bulb and work your way down, wiggling them to check for looseness. If half a strand is working and the other half is not, you probably have a loose or broken bulb. Why does only half a string of LED lights work? If a bulb is missing in a circuit only the bulbs in series of it will go out. For light strings that commonly have over 50 bulbs, they are constructed in 2 or more continuous circuits. How do you change the fuse on LED Christmas lights?Ī light bulb has come out of its socket or is half out of its socket and it has brought down the circuit.Why are there two fuses in Christmas lights?.How can you tell which bulb is blown on Christmas lights?.How do you know which bulb is bad on LED Christmas lights?.Why is one part of my LED lights not working?.How do you check a fuse for a string of lights?. How do I know if my Christmas light fuse is blown?.How do you fix half Christmas lights without a tester?.Why does only half a string of LED lights work?.
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