![]() I don’t own any special tools, so the solution isn’t very elegant, but by going through the light strand and replacing all of the bad bulbs, I eventually hit on the one (or two) bulbs that were causing the whole strand to fail. Starting at one end of your strand, or in. The possible solutions include replacing the light fuse and replacing the. If you have LED Christmas lights with removable bulbs, the troubleshooting process is similar to incandescent bulbs. If you have a problem with a set of three-wire Christmas lights that aren’t working, I hope this solution is helpful. This Handyman video shows how to fix a string of Christmas Lights when half is out. It seemed like a lot of work initially, but I found the problem bulbs in less than twenty minutes. The keys for me were (a) knowing that the bulbs could be in one of those three states, and (b) just taking the time to test and replace all the bad bulbs until the strand started working again. I assume this bulb was paired with the first bulb in the strand that was out, but I have no way of knowing that for sure. I replaced about four bulbs until I replaced one light bulb and the entire strand came to life. The bulb didn’t work, and it caused the rest of the light strand to fail. ![]() The bulb didn’t work, but the rest of the light strand worked.We found several bulbs that were in one of three states: We didn’t have any special tools for this, so what we did was just start at the first bulb that wasn’t working, and then we tested every other bulb in the strand after it by removing it and testing it with another strand. Once we replaced both bulbs, the entire light strand lit up. For us, the “pair” part was a key, and through a little trial and error, we found out that the bulb where the light strand stopped working had indeed burned out, but it was also joined up with a second bulb further down the line that had also gone out. The short version of that article is that the way these light strands work is that the light bulbs are connected in series and in parallel, and the most important thing to know is that the bulbs seem to be connected in pairs. We couldn’t fix it by replacing the bulb right where the light string stopped working, so I looked into it and found this helpful (but a little too technical) article. But if the LED lens is significantly cracked or damaged, then anywhere from half to the full set will go out.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 the bottom line is that if one bulb goes out, but it's still intact, then yes, the light set will stay lit. So these light sets have even more protection to prevent the actual LED from getting damaged. The first 50 bulbs starting from the male end of the strand are out, that last half ending at the female end are fine. I have a strand of 100 incandescent lights. These larger lens sets have an outside lens and then inside this outer shell, they have a 5 mm conical lens. Hi - I should just throw the lights out but I refuse to let a strand of Christmas lights beat me. C7 and C9 stringer sets also tend to be resistant to outages caused by bulb breakage. M5 light sets have small diameter bulbs that break relatively easily and for this reason, M5s tend to have more problems due to outages caused by broken bulbs than other light sets.ĥ mm Wide Angle Conicals have very rigid bulbs because of the low profile of the lens. It is important to note that some sets are more prone to outages due to broken bulbs. However, fortunately, most LED lenses are very rigid and don't easily crack or break. When it comes to lens damage, the general rule is if the lens is cracked all the way through to the core of the LED, then either the entire set or on longer stringers, half the set will go completely out. ![]() Bulb lens cracked or significantly damaged As long as the bulb lens has not been cracked or broken, then the light set will continue to illuminate with the exception of any individual bulbs that are not working. LED bulbs do last a long time, but from time to time one does fail to light up. Let's take a closer look at each one of these. When looking at an LED outage, there are two types of bulb related outages:ġ) Bulb still intact, but fails to light up.Ģ) Bulb lens cracked or significantly damaged. Since the one piece LED bulb and socket design is our most popular style of LED, we'll focus on that type of set for this blog posting. It all depends on what kind of outage we're talking about. The answer to this question is not as simple as it might seem. You might’ve accidentally replaced some older bulbs with ones with different wattages. Because LED lights can only take a fixed wattage of bulbs. ![]() Firstly, try to remember if you ever changed the bulbs. A frequently asked question we receive on a daily basis is, "With LED Christmas lights if one bulb goes out will the whole set go out?" Reason 1 of 5: Wattages of Bulbs Do Not Match. ![]()
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