They worked last year. But what do you do now? Note: If you have very old light strings, they may very well use older-style screw-in incandescent bulbs. Old-style Christmas light strings with screw-in bulbs are best retired when they begin to go bad.
If you find one, open it and inspect the very small fuses inside the plug. There should be two. If one or both of the fuses look black or cloudy, or if you can see that the wire through the fuse has burned in two, you need to replace the ones that look bad.
Three-amp, five-amp, and seven-amp fuses are common sizes. Unlike the regular lights and receptacles in your house, light strings, especially older ones, are often constructed with the light bulbs wired in series. This means that the power goes through each light bulb to get to the next one.
If one fails—burns out—the power will stop there. Start from the end of the string with the male plug. This is slow and painstaking work, but it should pay off. The bulbs are usually mounted into bases that are inserted into the sockets in the string.Super easy way to fix your GE prelit Christmas tree's dead light strand
Grip the plastic base of the bulb and pull it out of the socket be careful; it's easy to pull the tiny bulb and base apart. Look at the bottom of the socket. You should see two fine, flat wires, resembling small, stiff pieces of ribbon. Straighten those out, and inspect them for corrosion.
If they are in otherwise good shape, take a new bulb and align the two wires in the base with the two slots in the socket, then push in the new light bulb until it is firmly set into the socket. An easier option: With LED light strings, a number of tester kits are available that let you quickly test and repair sockets.
One type, the LED Keeperbites into the copper conductors inside the insulation on the wires and allows you to troubleshoot the string in small sections. When you run out of repair modules, those can be ordered separately. Read More.Before throwing those strings of lights away and buying new ones, take some time to examine and fix them if possible. Here's an easy troubleshooting process for checking your strings of Christmas lights and fixing them if they are faulty.
It sounds too simple to be true, but surprisingly often, problems with a string of lights have nothing to do with the lights. When testing lights, start by making sure you're plugging them into an outlet that's carrying power.
If the string of lights appears dead, there's always the chance that the circuit's breaker has tripped and isn't providing an electrical current to the outlet. Check the main service panel to make sure the circuit breaker is in the ON position, and reset it if it has tripped.
Slide this door open, pry out the small glass fuse and examine it closely. Some light strings may have two fuses; examine them both. It's usually possible to see a break in the small metal filament inside the glass fuse if it has burned out. If the fuse is bad, replace it with a duplicate of exactly the same size and rating. Electronics stores or hardware stores sell a variety of replacement fuses. A fuse can also be checked using a common electrician's tool called an ohm meter.
The goal is to test the fuse for continuity—if the fuse is operating correctly, the fuse will show no resistance. Very often, the problem is with individual light bulbs in the string.
This is easy to spot in some light strings because you can spot the individual bulbs that have gone dark. Sometimes the light bulbs will simply be loose in their sockets—just pressing them firmly in place sometimes restores the function.
In older lights strings, though, a single dead bulb may cause the entire string to go dark.
Here, it can be quite time-consuming to replace individual bulbs until you find the culprit causing the problem. There are different types of testers available, including "touchless" models that you simply hold close to each individual bulb to identify if it is bad.
With other tools, you remove individual bulbs and slide the plug portion into a small socket on the tool to test it. If none of the individual bulbs are faulty but the light string still refuses to light up, there is a chance the shunt wires in the light string are faulty. When working correctly, there is a wire shunt in the string that bypasses each of the individual light bulb sockets.
This is designed so that power continues to flow when an individual bulb is burned out. But if the shunt wire itself is faulty, the light string will fail to operate correctly. The Lightkeeper Pro is a trigger-operated tool that sends a pulse of current through the light string to identify the faulty light bulb and repair the shunt. The tool comes in a kit form that includes extra light bulbs, a continuity tester, and even a battery tester for testing various batteries.
If you have old strings of incandescent holiday lights, they may generate considerable heat. Because new styles of holiday lights are very affordable, it is a good idea to get rid of old incandescent lights that may pose a risk of fire. These lights are especially dangerous if you decorate with a natural evergreen tree or pine boughs that can become tinder dry.
If your holiday lights get painfully hot to the touch, you are well-advised to replace them with strings of cool LED lights. Tip A fuse can also be checked using a common electrician's tool called an ohm meter. Warning If you have old strings of incandescent holiday lights, they may generate considerable heat. Related Topics.LED string lights last a long time and will sometimes out last the fuse so checking to see if the LED light string fuse has failed can save your set of lights.
It is quick and easy to change Christmas light fuses and get your holiday decorating back on track. Important Note: Always unplug your Christmas lights before attempting to examine or change a fuse. Find the replacement fuses in a small plastic bag attached to the female end of your light strand. The fuse compartment will then be on the male end of your light strand. Take the male end of the strand and press down with your fingernail or a flat screwdriver, pushing forward towards the prongs.
Remove both fuses. The fuses may just gently fall into your hand, if not, you should try gently tapping the plug against your hand. Holiday LEDs has created a guide to help you solve this problem and get your tree looking its best. Start by measuring the height of your tree. You want to measure from the top point of the tree all the way down to the base, ignoring the height of the trunk.
Find the size of your tree and the type of light you are using on the chart below. C7 or C9 Bulb Shapes. M5 lights are the mini lights you may be familiar with. G12 bulbs are raspberry shaped. C6 bulbs are strawberry shaped.
C7 and C9 bulbs have the traditional shape you might have grown up with—larger than the strawberry-shaped C6, with the C9 the largest of all.
Pre-lit Christmas Tree Lights Repair/Replace
C7 and C9 come in string light versions as well as replacement bulbs. We have a large selection of replacement bulbs and accessories. Visit our home page for LED Christmas Lights and all the accessories you will need to complete your decorating! You must be logged in to post a comment. The top will slide open revealing two fuses. Insert the new fuses.
Slide the little fuse compartment door closed. You are now ready to enjoy your light strand once again. Leave a Reply Cancel reply You must be logged in to post a comment.Time Required. Before attempting any part of this repair, make sure that the lights are completely unplugged from any electrical socket. Buy these tools. Blown fuses are one of the biggest culprits of broken Christmas lights — especially if the entire chain of lights is non-functional.
The good news is that they can easily be replaced! With the plug in hand, slide the door marked "Open" in the direction pointed by the arrow. Remove the two fuses, and inspect them by looking at them up against a bright background such as the sky. If the fuse is good, you should see an unbroken strand of wire running between the two metal contacts.
If a specific section of the lights isn't working, there might be a bad bulb, or a bad connection between the bulb and the socket.
Bulbs are generally made to not break the whole chain if the bulb burns out, but sometimes a manufacturing defect will prevent the bulbs from maintaining the electrical connection for the rest of the lights.
Gently grasp each bulb, and pull away from the socket. Inspect it and ensure that the two bulb copper leads are in their proper location, and not twisted or missing. Continue with each non-functional bulb in the chain, up until you find the culprit s. Replace the bulbs as necessary. You can also use a Light Keeper Pro or similar continuity testing device to pinpoint burnt out bulbs.
Plug in the strand of lights, and remove a bulb to connect the Light Keeper Pro to an empty socket. Pull the trigger on the Light Keeper several times to bypass the bad bulb and light the whole strand, leaving the bad bulb dim. Replace the bulb you used to test the strand, then remove and replace any bad bulbs. You can use the Light Keeper to test the new bulbs before you install them. Make sure the lights are completely unplugged from any electrical sockets before proceeding further.
Over time, the contacts inside the socket can become corroded or filled with dirt and grime. This can prevent proper contact between the bulb and the socket, which often results in no power to the bulb.
Fixing Broken Christmas Lights
If all else failsthe bulb socket may be broken beyond repair. Removing it is a cinch though, and should restore functionality to the rest of your lights! Don't do this for more than one or two sockets, cause it'll raise the voltage on the rest of the strand and may cause other bulbs to burn out.Post a Comment. For the last two or three years, the lights in the bottom portion of our fake Christmas Tree haven't worked.
How do you change a fuse in a set of Christmas lights?
I chalked it up to traditional light strands where if one bulb does, the whole strand goes, unless you can figure out which individual bulb is giving you problems. This is our tenth year with this tree, so again, I figured the lights were getting old, and that it would be a pain to try to fix. As we were putting the tree together today, Dick suggested that we try to figure out the light situation tier by tier.
I admit, I doubted him, but he was totally right to try! When we found the small bag of replacement lights and directions, we also found tiny little fuses!
The directions said that most strand light problems stem from a blown fuse. It then gave step-by-step directions on how to replace the fuse for each strand.
Since we knew which strand section was having problems, we tried popping out the old fuses and replacing with new ones. Who knew?! Thanks to my hubby for having the wherewithal to investigate. Smart man, he is. Here's a photo of the small fuses, next to replacement bulbs for size reference.
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About Me Trina View my complete profile.There is nothing more frustrating than a prelit Christmas tree that isn't working! The guide below will help you troubleshoot and fix common issues associated with prelit trees. Troubleshooting common issues with prelit artificial Christmas trees can often be completed within a matter of minutes.
Most troubleshooting in trees centers around light strings that have gone dark, or the initial assembly of the new tree. Methods in troubleshooting include testing the light strings in an effort to find the faulty bulb, or simply replacing the existing light strings with working sets. Below you will find the most common problems and solutions associated with light strings on prelit Christmas trees.
If the tree has multiple light plugs stacked together, the most common reason for a section not turning on or flickering is often as simple as one of these plugs coming loose. Check that all plugs are secure. If your tree is a power pole or one plug design, check each section where the poles meet to ensure that there is nothing obstructing the connection and that they are seated properly.
Check the plug fuses. Slide open the door of the plug and replace any fuses that look burnt out. Then plug the strand into an extension cord to see if this fixes the problem. If the fuses all look fine or replacing them does not fix the problem, there may be a problem with a bulb or the wiring itself. Replace any damaged bulbs with spare ones. If the issue is with the wire itself, remove the entire string and replace with a new strand of lights.
In older trees all of the light wires may need to be removed at some point snipping them with wire cutters makes the job fasteryou can then restring the tree with lights, which will allow you to keep your cherished tree for even longer!
If no bulbs are damaged, test each bulb with a bulb tester, these can be found online and in most big box hardware stores. Troubleshooting and fixing an incandescent prelit Christmas tree can be easier with the use of a mini light tester. If using a mini light tester, our resource page regarding Testing for Faulty Bulbswill prove useful.
Understanding the technology behind an incandescent bulb and a light string is helpful when trying to determine the cause of a bulb that won't light. Each bulb is lit through a filament, which is contained within the bulb's glass case.Last Updated: April 26, References. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness.
This article has been viewedtimes. Learn more If your entire string of Christmas lights stops working, you may have a burnt fuse. Replacing a Christmas light fuse involves locating the fuses, removing the burnt fuses, and installing the replacement set that came with your Christmas lights. If the problem persists, then you may have non-working Christmas lights or other problems with your light strand.
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How To Replace a Fuse to Fix Christmas Lights
Be careful not to electrocute yourself. Take a firm hold of the socket and pull it out of the wall. Pulling out light sockets from the cord can cause damage to your lights. Test your lights to verify that they are still not working.
Turn on the switch to see if the lights light up. Find the male sockets.