How to Find Bad Christmas Light Bulbs Quickly! LED or Incandescent

In this video I show you how to find bad or burned out Christmas light bulbs quickly! No more going bulb to bulb, pulling one out and putting in a good one just to see if that is the one not working. This will save you a ton of time and frustration.
Items Used in the Video:
Klein Non Contact Voltage Tester: amzn.to/3cTZpM2
Thank you for watching and for subscribing. You can support the channel at no cost to you by using one of the above affiliate links. This helps support the channel for new content!
Blessings,
Adam
How To Home assumes no liability for damage or injury. How To Home highly recommends using proper safety procedures and professionals when needed. Our content is for entertainment purposes only. No information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not How To Home. How To Home will not be held liable for any negligent or accidental damage or injury resulting from equipment, tools, electrical, fire, electronics or any items contained in this video. Attempt projects and repairs at your own risk.

[@joecirillo374]

I have to tell you, I have watched so many of these videos trying to fix my half working LED lines and this the first one that has actually worked for me. Thank you very much for this!

[@HowToHomeDIY]

Oh awesome! I am glad it was able to help you. Thanks a lot for the feedback!

[@petes6354]

​@@HowToHomeDIY

[@travelchannel304]

I haven't tried it but i agree.how straight forward this info is from the start.

[@l.heredia9293]

I have spent too much time trying to fix the Christmas lights with my family. This will be a game changer. Thank you

[@3FAZNI]

Same here. First and only video that are so easy to follow. Thank you so much.

[@anthonyautomobile8089]

I'm a professional automotive technician, and shop owner, and I have definitely more than dabbled in AC voltage repair. I have to say this video was well produced, presented, to the point ,and informative, and I've always wanted one of those Klein non-contact detectors but since I have so many different DVOMs and even DSOs, I've always passed them up. This video has motivated me to follow the link and finally buy one. Well done, sir, and thank you! 👍🏻 (I subscribed as well!)

[@HowToHomeDIY]

Wow, really appreciate that feedback Anthony. I am glad to hear that you liked it. Thanks again for the feedback and look forward to seeing you around on the channel!

[@sreihart]

Such an enjoyable video! No long lead-in that no one wants to see. You just kept it to the subject, clean, concise and informative. You sir, deserve a raise! GREAT JOB!

[@jimstahlheber9002]

Great instructional vid for a non electrician. I have watched this last year and this year after I pulled the lights off the bushes and brought them in.

[@lash1034]

I tried this but still not able to find it. All bulbs show to have power but none are coming on. Maybe a stupid question but mine has a plain green piece between the first light and second. Maybe this is a fuse or something? It doesn’t seem like it opens.

[@richardrodriguez7825]

Same exact issue with my troubleshooting. I was able to open the "plain green piece" that has some component that I suspect is a capacitor, but I certainly do not know for sure. I've looked through the comments and don't see the gentleman addressing this or other several other similar issues. I've tested all my bulbs in a section of the non-working string and they are all good. I tested each plug for power using the $30 tester I purchased after watching this video. Still no luck, but now I'm out $30 :(

[@ladyknu-knu9906]

I have watched every video on You Tube on how to fix lights and yours is the best one. You explained things so much better than anyone else. Some are so technical that I had no idea what they were talking about. Yours, hands down, is the one that explains things where anyone can understand what to do. Thank you so much.

[@ChristopherDillman]

5:08 - Fascinating. Glad I found this vid. Going to add that tool to my toolkit!

[@thebulge3396]

Great video!! I was just getting ready to give several strands the ol' heave ho when I came across this. Thanks for the great tutorial on this matter. Now I'm off to the hardware store to get the non contact meter.

[@dennisbedeau3554]

Fuses are ok. Tester shows power all along the string but no lights. Could all the bulbs be bad? HELP.

[@polycarp9591]

My issue as well.

[@molonlabe2645]

Anyone else noticing their blue (and green, but mostly blue) LEDs failing after the first 2 holiday seasons? The packaging says 25,000 hours, but there’s no way that’s accurate for those colors.

[@lyonanddebanderson4418]

dang, thank you-been throwing out half strings for years. If it works out we'll donate. great simple to understand video.

[@joeshmoe7789]

Just ordered the tester. Now I can't wait for the my lights to go out!

[@HowToHomeDIY]

😂

[@SB-qg3re]

Very helpful video and easy to understand. Much more precise then other videos on the same subject I have watched, without all the extraneous information. Keep up the great work and videos.

[@HowToHomeDIY]

Awesome! Glad you liked it! Thanks a lot for the feedback 🙂

[@drhermanstein]

Just echoing a lot of the previous comments. Well shot, well recorded, well edited and the content is top notch. I now know more than when I started watching. most others just left me confused.

[@tgrigal]

Dude!! You rock. This saved my entire outside light setup for Christmas. Thanks and have a great new year!!!

[@HowToHomeDIY]

You are very welcome! Really glad to hear you liked it! Thanks a lot for the feedback! You have a great new year as well!

[@ralpho58]

Amazing. I have thrown out too many strands of Christmas lights due to the frustration of trying to find the bad bulb. Thanks for this straight forward video.

[@larrygreenwood6923]

me too

[@about2flip]

Thank you so much!!! Fixed my lights in a matter of minutes. Luckily I had that tool. 😊

[@Schollii68]

Enlightening explanation 😂 But seriously useful, esp the trick of turning the plug! My case is a little more complicated because the lights are attached to a Christmas tree so the strands are near impossible to separate and it's really hard to follow the chord around the branches. There's got to be a trick I'm missing!

[@Samiam173]

I just fixed the wrap around light strands on my stair case...just start at the first on out that you can get to and replace the bulb and keep going. It may be hard but it's better than taking them all down. YOU CAN DO IT!

[@grahamatkinson7276]

how do you repair led lights were bulbs are fixed. Graham.

[@marylobacz4753]

This is awesome! My husband used to spend hours trying to find the defective bulb. Going to invest in one of those noncontact voltage testers!

[@BA-pg4od]

Great video. I learned something new today. Thanks.

[@Gulfshoreman]

Glad I found your video today. Just what I needed after watching another video with diagrams instead of "hands on" like yours. Much easier than the LED Light Keeper I bought several years ago which requires puncturing the wire insulation (which is sometimes nearly impossible). Used my inductive test probe to check for voltage on both sides of the socket and the Light Keeper to verify the LED is good. Troubleshooting the unlit section led me to 2 bad LEDs (one with a resistor with a broken lead) and a bad socket. For those that may not know, when testing LED bulbs there is a positive and negative lead. If it does not work one way, switch your tester on the lead. Thanks for the video!

[@HowToHomeDIY]

I am really glad to hear that you found the video helpful James! Thanks a lot for all of the feedback and tip!

[@yca67]

I have a box full of the expensive lights where only half works. In the past I’ve even thrown them out. Watched your video and immediately went to Amazon for my tool. Thank you!

[@otakelblanchemanor0659]

I couldn't tell you how many times I have seen my mom sitting with a box of lights, going thru them one by one changing out the bulbs to find the dead one! Hmmm a Christmas memory for the much future I hope! BUT woohoo I have found the perfect gift for this amazing woman I call Mom! Finally! And for that I thank you!

[@HowToHomeDIY]

I can certainly relate to that! It can definitely be very time consuming. I am really glad to hear that this was so helpful to you and your mom! I really appreciate the feedback! Thank you.

[@frankbell4043]

Exceptional video! I had been testing using a similar tester, but I had obviously not been doing something right. Thank you!

[@HowToHomeDIY]

You are very welcome! Really glad to hear you liked it. Thanks a lot for the feedback Frank!

[@cindyhenry1410]

QUESTION: how do you fix strands that have an every-other bulb arrangement, or ones where the whole strand is dead because of one bad bulb?

[@darma8030]

I have watched several videos to find out why my pre-lit Christmas tree is giving me fits but I just didn’t get it. You did an amazing job at explaining what is going on!! THANK YOU from the tips of my aching thumbs and ragged fingernails!! (Next time I buy a tree it will be based on how easy the bulbs are to remove!!)

[@HowToHomeDIY]

You're welcome! Glad it helped! Give those fingers a break. 😂 Thanks for the feedback.

[@johnadams2313]

Thanks for the tips. I have a string that is not working too!

[@chrisrussell8206]

Thank you man! I have old school icicle lights and I was loosing my G damn mind. I have been checking each individual bulb for years now... the hard way too. You’re going to save me so much time and frustration. Great Video!

[@slc6900]

THANK YOU FOR THIS VIDEO AND INFO....WISH I WOULD HAVE KNOWN THIS LIKE THE PAST 40 YEARS! BETTER LATE THAN NEVER

[@HowToHomeDIY]

Haha that is true! Hope this will save you time from here on out! Thanks for the feedback.

[@bellarain11]

Thank you so much! You saved me! I had just bought a few brand new set of lights out and just to be safe I tested each one of the strands prior to hanging them on the eve of my house. All worked. BUT, sure enough, the minute I was done hanging all the strands of lights, there was one strand dead smack in the middle that was completely out. Brand new and I tested it??!! 🤷🏼‍♀️ Well, thank God I came across your video because I was about to hop back on the ladder and replace that entire strand with another one. About 4 lights in… I was able to figure out which light bulb was out, put a new one in and VOILÁ!!.. no having to rip any lights down to replace them with a new strand. Thank you for taking the time to share this! Like I said… You’re a complete lifesaver ! 🙏🏼🎄

[@dv87]

Works good for finding bad spots in extension cords too.

[@waltciii3]

This is great information! I can only imagine all the salvageable light strands I have binned.

[@bigallis1]

Thank you, thank you, thank you for the best turtorial I have ever seen on testing Christmas tree lights! Very much appreciated.

[@Britineeng]

Your video is the best on this topic! Thank you

[@GunnyPhillips]

Nice video. These strands are so cheap as to not be worth the troubleshooting time, in my opinion. I've moved to LED rope lights for my tree. You don't get the classic look but they work flawlessly year after year and give you all sorts of color options at the press of a button.

[@HowToHomeDIY]

Hmm I always have a few strands of LEDs that need troubleshooting each year.

[@keithpatterson3477]

Very good video well explained thank you

[@jimsjacob]

This was great stuff! Really self evident if you think about it, but I hadn’t I guess…. Broken down like this, the logic can be applied to many projects. I had an LED string that was not working and I did resolve it, but not in the smart manner that is outlined here. I have all the tools you used, less the common sense! 😅

[@sheepdog401]

I wish I would have watched this before throwing out a strand of lights and replacing them ! You have given me valuable knowledge. Thank-you.

[@girohead]

Spot on, I had assumed this, but others were vague about how to test and replace. I'll look for broken connections, but I think it was often just unseated, from slamming around.

[@drheili]

Thank you, Thank you, Thank you. So obvious, yet I missed it for years. Just use the same non-contact tester I've been using for years. No more over-priced and awkward to use string testers. This is simplicity at it's best.

[@HowToHomeDIY]

Glad it was helpful!

[@lazrados]

Awesome video. Just got 2 sets of 30 feet LED Christmas lights up and running. Thank you very much !!!!!!

[@HowToHomeDIY]

You are very welcome! Really glad to hear that it helped you! Thanks for the feedback.

[@Maverick-px8ir]

Wow, talk about relieving those Christmas light headaches! Just what I was looking for. Thanks!

[@larrygreenwood6923]

Amen

[@johnrupple4318]

Thanks for making this video and sharing very helpful.

[@HowToHomeDIY]

You are very welcome! Really glad to hear you liked it! Thanks a lot for the feedback John!

[@JJ-np1ig]

Dude!! Fantastic! Thank you. Simple, easy directions with a basic electrical tool. Great job and thanks again! :-)

[@MikeFarris1]

😱 I have never thought of this, I have the exact same tool. I tossed strands because I hate pulling out each bulb to test. Thank you for this video.

[@Blaydrnnnr]

Good video, well explained for those who didnt know how light strings work. I already knew how to detect if a bulb is bad if half the string is out, but more frequently these days, my strands are completely out, OR, the lights will glow so very faintly, that they are almost undetectable. In the case of them still having power to the next plug end, but not lighting, glowing very very faintly, I have never been able to figure out what was wrong, maybe something with the rectifier? But on LED srands WITH replaceable bulbs, and the entire strand out, I'm not sure whats going on here. My "no touch" voltage detector shows power the entire length?

[@davecarolpugh7839]

What is the tool make and a number of the tool

[@redbirdsjunkie]

7:39 Not all heroes wear capes, some wear light bulbs. Appreciate it!

[@HowToHomeDIY]

🤣 You are very welcome! Really glad to hear you liked it! Thanks a lot for the feedback!

[@MikeBee77]

Just amazing, thanks for sharing this, it is frustrating test bulb by bulb, pulling them out.

[@rotl9915]

this has to be the best instructional video on youtube. thank you for your efforts.

[@dlipp23]

Great explanation and video, going to try it now. Thanks 🙏🏼

[@HowToHomeDIY]

You are very welcome! Really glad to hear you liked it! Thanks a lot for the feedback!

[@JustinGuyer]

This was such a great and easy to understand explanation. And best of all it worked! My half strand of lights I've been hanging onto for years now fully lights up! Thank you so much!

[@MikesGarage96]

Very helpful! I’ve got that same tester, never thought of using it like this

[@matthewjcbrooks]

Very informative and helpful. Thanks!

[@familianeurodivergente]

Omggggg such a good video!!!!! Thank you sooooooo much!!! I’m running to Home Depot to get my detector thingy right now 👏🏻👏🏻👏🏻👏🏻 happy holidays 😁

[@airmojo]

Putting away the Christmas stuff, and had a light strand do this where only half was lit... I told my wife I might need a KZbin video to help figure this out without taking all day... HAH ! So here I am, and tomorrow I will be going to Home Depot to buy that Non-Contact Voltage tester... the 12v to 1000v model would be ideal for my O-gauge model train layout too ! Thank you for the excellent video... Happy New Year !

[@joetobin-drummer5260]

I like this video. It seemed to make sense. However, every wire, bulb, and socket appeared to be working and getting power on the first half of my G30 LED strand that was out, which leads me to believe it may be a faulty in-line resistor, if that's what that solid bulb socket is... there are 2 in the strand... 1 directly after the 1st bulb in the 1st half of the strand, and the 2nd one was located right after the first working bulb in the 2nd half of the strand. I replaced the entire strand in less time than I spent trying to locate the problem. Who knows, maybe I'm the problem. 😅😅😅

[@Steven-rr7bw]

How about we start making bulbs in America of good quality. Not but this Chinese crap.

[@HowToHomeDIY]

Sounds like a good start!

[@notmyrealname3462]

Would just have to find consumers willing to pay 30 dollars per string of lights.

[@gl35]

You made my day. Thanks. I was throwing away whole strands before. Now, I know better.

[@HowToHomeDIY]

Awesome! Glad you liked it. Thank you for the feedback!

[@fododude]

But ... but ... if the bulb is burned out, the strand should still light. They're designed to have continuity whether or not the bulb is lit (unlike the bad old days). So what we're looking for is the point where the circuit is broken. And here's a question ... if you are getting a voltage reading at the beginning of a strand, why aren't those bulbs lit? I am confused.

[@jenbea4753]

Fantastic demonstration. Way easier than trying to use a big volt meter. Will be getting that volt tester by Klien tools. Thanks😁

[@rickgaudette9083]

This process didn't work for me. I'm a little baffled as to why. I have a 200 light LED string. The last section of approximately lights number 150 - 200 were out. The culprit was light number 190. The voltage detector stopped sensing voltage at about light number 155. I only found the bad bulb through persistent testing of each bulb.

[@cbpaxton00]

I have that tool and never thought about using it for Christmas lights. Great idea

[@JT_70]

I wish I had seen this a couple of weeks ago. My wife was determined to find the bad bulb(s) in the lights which are pre wired into our tree. She used my voltage tester and even changed almost every bulb on that string but never found the culprit, so she bought a new string and wove it into the tree. We’ll try again next year and follow your process. We were unaware of the possible need to reverse the plug in the outlet.

[@milfordcivic6755]

Do yourself a favor, don't buy pre-lit trees. Once they get to be 3-4 seasons old, the whole light sets start to fail and it's impossible to find the bulb, because they all fail at the same time.

[@tricogustrico]

Glad I found this video.

[@thomvogan3397]

The easiest way is to find lights wired in series, then only the bad bulb goes out

[@hoppercar]

I just buy strands that are wired in parallel.....so if one bulb burn out...the rest stay lit......and you don't have to fool with this crap....you wouldn't buy a house with lights in series....so you would have to change bulbs in every room....why buy crappy Christmas lights like that

[@ladyfame1430]

I have icicle lights and it’s really frustrating because one section is actually burnt out and in the other section looks great, but not only that when I replaced one bulb like you sporadically other random ones went out. No specific pattern either. The strand that hangs down making it a icicle light some will have 2 to 3 out and another one will be just fine. It would be nice if when they went out it would be some kind of pattern so I could just trace it down the line. But nope…..lol. It’s sooo frustrating. The crazy part is is I put a burnt bulb back one of the sockets to hold the place and it went back to normal for that section. It’s just a mess, 2 steps forward to get 10 steps back! Lol. And I’m so cheap. I hate to trash them especially when it’s only a small section. Have you been been tempted to cut it and rewire it…lol. Repairing one light creates problems that never existed down my line. Thank you so much….your video is the best out of the what feels like the hundreds that I have watched. Even if my problem is not fixed, you taught me things that I never knew to last me a my lifetime. Thank you again!

[@danman32]

I have a question and a comment. If the detector threshold is 70v, because of voltage drop per bulb, you're going to come to a point where there is power to the bulb, and enough voltage to light the bulb if there was a continuous circuit but not enough to be detected. OK, perhaps with incandescent it's a pure resistor and with no current, there's no voltage drop so you could get over 70v all the way to the last working bulb, maybe. But with LEDs, they require a minimum voltage drop to conduct, otherwise no voltage should be on the other side. Comment: the leading cause of LED Christmas light failure is rust. LED leads are not copper but steel or other ferrous metal. This was even before copper started getting expensive. But a break caused by rust is still an open circuit so the inductive testing is still valid. Now if only those sockets were standardized and the LED or incandescent bulbs had standard voltage and current ratings, we'd be in good shape. You can get bulk LEDs but the voltage and even size/shape varies so usually not a perfect fit. You'd think by now it would be easy to get replacement LEDs specifically designed for Christmas lights, and in packs of assorted colors.

[@jennifereubank4704]

Thank you so much! Can you do a video on how to re-strand😂 some Christmas decorations that don’t need a whole string of lights is there a way to cut it off? I have art Christmas decoration figurines. Thank you you’re the first one I found for help! This is JENNIFER from Colleyville Texas😊

[@mamazalama]

It's all a bit too much for this girl. I'm not following the part about that "extra" wire. Electricity scares the you- know-what out of me, so I want to understand everything. It's irritating not to know what that wire is about. Sorry and I'm sure your video is helpful to most folks, thanks for your guidance. Maybe I'll get it eventually.

[@InterCity134]

The fundamental problem with modern Christmas lights is twofold. Because if of the hard drive to as cheap ass possible we have : 1) incandescent lights that mostly break after one season and are impossible to fix because the bulb to plug Interface is so cheap ( wires folded over opposite sides of the base) that repeated unplugging and insertion will break even good bulbs. 2) the LED versions are typically no serviceable ( tree string lights) and are absolute crap in terms of brightness and appearance compared to the incandescent and thus not a replacement. So we have no working solutions. I wish we still have the well made incandescent of the 70’s. Those were bright and serviceable and looked good. Unfortunately it’s more efficient to just buy new strands and trash the old ones. Because they are so cheap.

[@billmalec]

Here's the best way... Leave them in the store. Haven't messed with these stupid things in 20 years. So much happier every year since.

[@laurentodd1551]

This helped me understand how to use the tester I ordered. I found the bad bulb, BUT I can’t find the right replacement bulbs. I ordered style A and style D bases with no luck. This is for a prelit tree, fyi. Do you have any idea how I might figure out which bulbs to order?

[@bquedenfeld]

Very helpful but didn’t work I have GE C-5 led Christmas lights did everything you said for about 2hrs Even used tape on builds so I knew where the bad one is Found power coming from the plug/ male end to socket opposite of socket no power Put bulbs in that I new work but still nothing Need help this is on the tail end / Female side of the strand on light

[@jackbenimble4067]

Thanks Adam. Even though this video is older the info stands and its easy to fix them now. You and the family have a Blessed and Merry Christmas and a Blessed New Year.

[@HowToHomeDIY]

You are very welcome! Really glad to hear you found it as helpful as I have. Thanks a lot for the feedback Jack! Hope you and your family have a Merry Christmas and Happy New Year as well! God bless and take care!

[@patricktepezano]

So I have 4 strings connected.. the first doesn't light at all, but the last 3 light fine. How does that work? How can I fix? (LED)

[@bryandiel6773]

You just save me $30/$40 not purchasing the LED pro tester, I own a non contact voltage tester. A cheep H.F. one...I will invest in the Klein tester because it stays on!! I have a half lit reindeer I can now fix!!

[@HowToHomeDIY]

Awesome! Really glad that it was helpful for you. I did not realize that is how much the new pro tester was. They have really gone up in price it seems. I had to fix some deer this year as well, seems they are going out almost yearly now haha. Thanks for the feedback Bryan!

[@hskrgrad]

Great video! Thanks!

[@johnduffy6546]

Gotta get me one of those testers

[@gail5553]

You rock. But without the tester, you're kinda screwed. Thank you. I fixed my LED lights.

[@daholland65]

I have a question, the light comes on the LED keeper, but when I test a bulb, that came out of a working stand. I don't get a lit bulb but the keeper red light comes on. I've been over half way down the side that doesn't work and so far no lights. Any suggestions

[@phoenixhvac-r828]

Great advise on tracking these opens, also have found if its not the bulb check for disconnected wiring at bulb junctions, very cheaply made.

[@charlesmuller5162]

I have power running through all 3 wires no matter which way I put the plug in. The only thing that's lighting up like a christmas tree is my voltage tester. I can't find the dead bulb. The tester goes off no matter what I touch. And the entire strand is not working.

[@RLDenham]

Thank you for the information this video is much better than most on the sibject. I still prefer to buy high quality lights instead of working on broken big box store brand strings & nets. I used to waste time trying to fix lights knowing all the technical reasons why they failed when it was clear I could have spent that time at a job & earned enough to buy new lights I stoped the madness of repairing cheap lights. In some cases were I can't get a type from a high quality source I buy new units & swap the bad ones out for the good & return them as defective.

[@greatlambrini8722]

All very well on string lights. Unfortunately the lights built in to a tree are not quite so easy as it is almost impossible to follow the strand. You can do it though, just more difficult.

[@elizabethromsloe1096]

Complete with a bad dad pun at the end. 🤣 I have LEDs on my balcony railing and your affiliate link in my Amazon cart. Why does that tool not pop up at Christmas time next to the cash register at every hardware store? Thank you for this video.

[@HowToHomeDIY]

Every once in a while I am able to get a GREAT dad joke in there 😂 I am really glad to hear that you liked the video. They want you to buy their overpriced lightsaver tool. It works somewhat like this does but this to me is just handier and better at pinpointing. Thanks a lot for the feedback Elizabeth!

[@lillianvargas7863]

Nope it didn’t work for me, I did exactly n still no result 😢 is a shame I have to throw away these LED c-7 lights, so expensive when I have same issues with cheap ones

[@andrewsych3265]

I have a dead LED string and every bulb triggered the sensor. I made sure the line side was going to the bulbs. I tried it with a working string and removed a bulb and the test worked like your video. I did find two corroded sockets with broken LED leads. Something is strange with that brand of light string.

[@poolman8676]

Well you made that look easy. It's only voltage tester will work then correct? It's been 3 hours and tingling bulbs to find out the whole strand isn't working. Going to be an easier way, great video

[@sl5311]

Thanks. I found my bad light. Great video.

[@HowToHomeDIY]

You're welcome! Glad it helped! Thanks for the feedback 🙂

[@vtsoukup]

How come you were testing the middle of the two strings at the base of the LED instead of the bottom of the light/bulb like you did the incandescent? Is there a difference in testing the two? Or did you do it that way because the LED bulb was so fat?

[@TheKeymaster316]

I don't know how I've read so many posts and watched so many videos and this is the absolute best I've seen yet. I like this method 1000% more because it's actually tracking the problem and not pulling every bulb and just guessing where the issue is at. I've been in cable TV for 24 years and the divide and conquere method is the tried and true way to break a problem like this down. Ordering my voltage detector tonight!

[@hardcoreinpa]

Will this method work for a string of LEDs that a section is very dimly lit and the rest is normal? Or could it be one of the resisters? It's a 50ft string.

[@LeeuwSandor]

Great Video. I got here after I had replaced the fuses and still did not get the lights to work. Getting a no contact voltage tester tool like you suggested in the video seems a no brainer and a great addition to my tool box. Many Thanks!

[@johnd9279]

A string of lights on a table is too easy. Mine are permanently attached to the tree. It is difficult to find the start & end of a individual string of 50 or trace it bulb to bulb through the tree. We faced the dead parts to the wall. There are multiple connectors that go together as the 4 sections of the tree are assembled. Each connector seems to serve several light strings.

[@Lonlyfisherman68]

Where did that piece of wire go from the LED lights?🤷🏼‍♂️ it was working before

[@CourtneyFiedler]

My tree is pre-lit. The light strands only have 2 wires, not 3. Will this technique work for the lights I have?

[@zhwilson2437]

我昨天修理有一个灯条有一半不工作，唉，修了我一整天，每个都拉出来搞还不能100%找到坏的那个灯泡，你这个视频教的非常好，我今天晚上马上去买那个秤测电笔. 非常感谢