Thanks to all the folks who have offered ideas. I have a string at home that runs 3 wires to every socket and you can remove an LED and the lights stay on, which leads me to believe that it is wired in parallel. If one LED is corroded going open, then how do you find it with LEDs not providing a continuous circuit. Watch as Ace's Home Expert, Lou Manfredini, gives you a checklist to run through if your pre-lit Christmas tree is not lighting up.
#Christmas tree lights not working half how to#
Any ideas on how to prevent that? Or repair that? We probably have 50 strings or more that are bad. That being said then, these lights were operating when we put them away the previous year so it would seem that wires wouldn't break just laying in the totes so possibly the Florida humidity is corroding the connections. So if half the string is out, then it would have to be due to an open circuit which would not stress the system. From my research on this site: when LEDs burn out they short, they don't go open. We are in Florida and we store the strings in large totes in a shed. We have hundreds of strings and we had quite a few strings go bad on half the string. So would the higher current flow of the first string raise the current for the entire chain endangering and shortening the life of all those strings? Some of our chains are 20 strings long and some are 40 strings long. So.if you removed or had several LEDs burn out and short, than this circuit would have higher current flow.and if this string was the first in a daisy linked chain of strings.would this endanger the entire length of this chain? Now.Current in a circuit is the same throughout the circuit. That would be the same as removing the socket from the circuit and soldering the resulting leads together. But, a burned out LED will likely be shorted increasing the current in the circuit.
I believe that open circuits don't damage anything else. I have read where the LEDs are steel and can rust and can create an open circuit. When we have pulled them out and started stringing them we discovered quite a few strings have only half the string working. The light strings that are working at the end of the season are coiled up and placed in totes and placed in a storage shed. I have been working with a volunteer team to put up thousands of LED Christmas lights and incandescent lights. Otherwise, if they’re dead and you can’t deal, recycle them to benefit charity here. Invest in a handheld light tester and wrap the lights around something wide like cardboard or invest in light storage boxes that come with spools. The waste they produce out of sheer frustration and lack of insight into how they work is breathtaking.
The materials are durable and the design is both weather proof and fire proof but they are assembled cheaply so they fail when jostled.
If the whole strand is out inspect the twisted wiring, replace the fuse.
#Christmas tree lights not working half series#
If a bulb is loose or missing it breaks the current bc they are series wired. Each bulb has a bypass wire so if a bulb burns out it’s just one bulb. If only part of the strand isn’t working it’s a bulb problem. Are you storing them correctly (spooled) and checking that they work after wrapping them for storage? Only 3 reasons string lights stop working completely: the copper wiring is compromised (physically cut or corroded), the fuse is blown or there is a loose or broken bulb.
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