If so, remove the culprit and tighten the bulb connection. I went through and pulled out and checked 300 lights to no avail. I simple cut the wire half why and make a short sting of lights. Or take that concept back up to plan with the entire kitchen. The only way to restore the circuit in a series lighting scheme is to replace the bad bulb with one that is known to work. It's just the sort of new/old mash-up I love. Big bold wonderful piece. Yesterday we had a three-wire Christmas light string where the first half of the string was working, but the second half of the light string wasn’t working. So this is one possible arrangement that would better utilize your space. Every year you take the box of holiday lights off the shelf, plug them in, and only half of them work. I always buy 100 light strands and have heard that 50 are better because of that problem. These are not old lights, yet I have half of my lights this year only lighting half way up the string? At least you save half the string, I know this is an old thread but Christmas lights can be so frustrating! The flasher bulb will only cause the circuit it is a part of to flash on and off. I work my way down the portion of the set that is not working, touching the wire leading in, and the wire leading out. I tried everything and nothing worked. Plus the gun would pay for itself if it fixes 4 strings. I checked all bulbs of the un-lit half and put new fuses in. The known good bulb becomes a tester as each bulb is replaced individually until the string lights up again. I've checked for missing bulbs, and these days the string is supposed to stay lit when individual bulbs burn out. When we put them up again this year, three of the sets had only half of the strands working. Rug on this drawing is about 9x7', long wall is 16' (TV wall) and front wall is 12'. It depends. greater constructive ones have the bulbs in parallel, if one is … You might want to give this a try if you're only using one extension cord. Also have a string of running lights I just bought, after I plugged them in and found them all working, I enrolled them and now every third light doesn't light up. I just cut out that socket and tape the ends together. Go through and twist all the lights on the non working side, because if one of two is loose, the whole string might not work. For $20 you can't go wrong. This is the case if your lights have a section near the middle with only 2 coiled wires, instead of the 3 you’ll find elsewhere. I know it is very frustrating when this happens. Sorry, just ranting a bit here. So far so good this year but haven't started the outside and some inside. Luvs. Have replaced not fuses and checked to make sure no bulbs are missing or broken or blown out and still don't work. I then plugged them directly into an extention cord that went to wall. LED-type lights do not have user-replaceable elements so it will probably be necessary to replace the entire fixture. Does anyone know why half a string of Christmas lights light up and half do not? Christmas is 361 days away. Get your answers by asking now. What kind of energy efficiency is that? Also have a string of running lights I just bought, after I plugged them in and found them all working, I enrolled them and now every third light doesn't light up. If you replace the end bulbs and the string of lights still does not work another bulb is … Hang them, go out to find that some are no longer working!!! lights still don't work. I'm syncing my new LED Christmas lights to music this year using a color organ which makes them flash to the beat of the song I am playing. Pattycakes, your theory might be true in some cases, but I had one strand today that I tested before putting on the tree, and only half of it lit up. Please help. I'm with decorcrzy on this one. I put an 80"long x 36" deep sofa and a 60"long x 36" deep love seat. Why is it always half-way down the string. Because consumerism is in the state it is in, we live in a cheap, disposable society. If the dormer could point the other way (to the right when looking at your picture), it would look fine I think. Happens to me, too. The color organ changes the voltage continuously causing the lights to flash. Check the light again to see if any of the bulbs work. She said you just have to follow the directions and it will tell you what to do. I just bought a lightkeeper pro a few days ago from a Lowes, because half of my 100 ct light strand on my garland was out. Thanks everybody, I have made it through my light ordeal. Hobby lobby brand tree. Hopefully those looking for practical information on electrical circuits and wiring LED components found this guide first. Just like finding an LED that is open except not looking for the LED's to turn on, but will increase slightly in brightness. I went to youtube.com and watched a video on it and it was so much more understandable, Keep in mind that if the bulbs on the string have that blackened look, then the strand is probably beyond fixing, I give lightkeeper pro two thumbs up"I'd give it three thumbs if I could). a fuse or wire issue. See "LED Christmas Lights and How to Fix Them" by Terry Ritter. hmm I think the following website explains why with some suggestions. Think opportunities for new lighting placed as you desire,insulation, even surround sound for the vintage vinyl could be built in. It's mostly mirror but has 3 sections of caramelly opalescent glass. I have decided to spend $10,000, go to China, learn to speak Chinese and go to one of the Christmas light factories and see if I can find the answer. this is the cheapest construction method dating way back from incandescent light strings. Have 30 minutes and some seasonal greenery? If only 7 of the 10 LED elements are now working it is most likely that the problem is in the light fixture itself. A good diagram can be found here: http://www.energy.gov/articles/how-do-holiday-lights-work. Actually. Not all LED trailer lights are fully submersible. I have other strings which have only half the string light up. In theory, this means you can cut off the non-functioning half of the light string and splice in a new end plug or half string of lights. Come on people, we need to demand that companies build great, long lasting products that we don't need to replace every year. So good to see so many posting on the Holiday forum. Looked at all the bulbs. The on the wall you currently show the TV I put a large 5' wide x 7' high (possible measurement) painting. No one seems to know the answer. Whoever posted the information about Light Keeper Pro I want to thank you. Measure and let me know, and I can adjust and we can work together on figuring out your best arrangement. 2) Bulb lens cracked or significantly damaged. Remove the fuses inside the plug and replace them with new fuses. My thoughts exactly...lol!! Usually casework is at least 14" deep (and these days many set lower cabinets sufficient to hold media boxes / upper shelves to manage flatscreens). Sometimes I need to take out one or two of the bulbs in the middle of the string where the lights are not lit. That usage rate is about 5 bulbs per month or a full string per year. Next time I see it I will pick it up. However, consider this only if you have moderate or higher electrical skills. Now I am just going by guess at size, so we need to verify actual measurements. 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