Repairing Guides

how to repair christmas lights in series

by Carmella Hoppe Published 3 years ago Updated 2 years ago
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How to Fix a String of Christmas Lights?

  1. Diagnose the problem. Before inserting each string of lights into an outlet, inspect it thoroughly. ...
  2. Find the bad bulb, and swap it out. Finding the one faulty bulb that’s causing the issue can be difficult. ...
  3. Fix the faulty filament or shunt. ...
  4. Replace the fried fuse. ...
  5. Upgrade your lights. ...

Full Answer

How to recycle your Christmas lights?

  • Start by calling your local waste service to see if they accept and recycle Christmas lights. ...
  • If your local government won’t recycle Christmas lights, never fear! ...
  • If neither of those options work, you can send your lights to a mail-in recycling company like Christmas Light Source or Holiday LEDs.

How do you troubleshoot a Christmas light?

  • The circuit isn’t carrying power.
  • A fuse has blown.
  • A bulb has burnt out and has created a cascading outage.
  • The wire has broken.
  • One or more bulbs are not seated properly in their sockets.
  • A bulb has burnt out and its shunt is not passing on electricity.
  • If you're using battery-operated Christmas lights, start by replacing or charging the batteries.

How to make Christmas lights work again?

Trace the location of the dead bulb.

  • Tug apart the braided wires to identify the one directly connected to the light bulbs.
  • Place the detector on this wire about halfway along the string, between two bulbs. ...
  • If the tool hums or lights up (depending on model), the problem is in the half of the string farthest from the plug. ...

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How to fix Christmas lights that are half out?

Run a bulb tester over the string to find any bad bulbs.

  • Depending on your tester model, it may beep or light up when you find a bad bulb.
  • If you find one bad bulb, keep checking for more. Mark each one with masking tape so you know which ones to replace.
  • Move on to replacing any bad bulbs that you find. ...
  • You can get a bulb tester anywhere holiday lights are sold. ...

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Why is one section of my Christmas lights out?

If half a strand is working and the other half is not, you probably have a loose or broken bulb. Start with the first unlit bulb and work your way down, wiggling them to check for looseness. If it flickers, that's your cue to replace it.

How do you fix 3 strand Christmas lights?

0:445:37CHRISTMAS LIGHTS! Simple fix for 3 wire Christmas lights - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo you put the wire through there. And then it pulls off just the outside. So you know then you justMoreSo you put the wire through there. And then it pulls off just the outside. So you know then you just pull it. So you get more wire to be able to connect both of them back together.

How do you fix one section of Christmas lights?

1:083:14How To Repair Christmas Holiday Lights - Ace Hardware - YouTubeYouTubeStart of suggested clipEnd of suggested clipSlide open the hatch in the plug pop. Out the fuse. And Slide the new fuse into place using aMoreSlide open the hatch in the plug pop. Out the fuse. And Slide the new fuse into place using a flathead Precision screwdriver or micro pliers. Makes this easier.

How do you fix Christmas lights when half string is out?

1:494:50How To Fix Christmas Lights Half Out - Ace Hardware - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can cut this particular diode off and use a wire nut to tie these two wires back together. AndMoreYou can cut this particular diode off and use a wire nut to tie these two wires back together. And then cap it and then the lights should work.

How does a 3 wire Christmas lights work?

There are three different wires. Each colored line represents a different wire. The blue line connects all the lights together in series and supplies power to the light bulbs. The yellow and red wires are both connected to the blue line on either side of the light bulbs.

Why do the other bulbs go out in series when one burns out?

In a series circuit every device must function for the circuit to be complete. One bulb burning out in a series circuit breaks the circuit. In parallel circuits each light has its own circuit so all but one light could be burned out and the last one will still function.

Why do some sections of Christmas lights not work?

If a section of the light string isn't working, there might be a bad bulb or a bad connection between the bulb and the socket (like a corroded socket). If replacing the bulb doesn't work, it might be a bad socket or broken wiring that needs to be removed.

How do you find the bad bulb in Christmas lights?

The easiest way to find faulty bulbs on incandescent Christmas lights is with a Christmas light tester. Simply bring the light tester close to each bulb. The tester's indicator will light up when it's near a functioning bulb.

How do you know which bulb is out on Christmas lights?

You can tell which bulb is out on your string of traditional Christmas lights by looking for the bulb that is “burned out” by looking at the tiny little filaments in the light bulbs to see which bulb is “burned out” or has lost it's filament. Many times the bulb will be “smoked” as well.

Why is a section of my LED lights out?

If one of your LED light strands isn't working, it's probably just because it has a bad bulb. If one bulb dies, it can cause the rest of the strand to stop working. The only way to fix the problem is to find the bad bulb. Sometimes only a section of the lights will go out, making your job pretty easy.

Are Christmas lights in series or parallel?

seriesChristmas lights are wired as a “series” of lights along a single electrical path. That means that the first bulb must past electricity to the next, sequentially, from first to last in the series for ANY of them to light up.

How do you fix LED Christmas light strands?

0:0019:37How to fix LED Christmas lights - YouTubeYouTubeStart of suggested clipEnd of suggested clipHere are my LED lights. Let's see what we can do to fix them so as you remember my how to fixMoreHere are my LED lights. Let's see what we can do to fix them so as you remember my how to fix Christmas lights video that has just the incandescent. The light keeper Pro is the tool to have.

What are the 3 wires on LED lights?

This means marker light, running light, brake light or blinker. In this case one of the wires will be ground (-) and the other is positive(+). Generally a white and a black wire will be provided. The white will normally be the ground(-) and the black will be the positive(+).

How do you know which Christmas light is burned out?

You can tell which bulb is out on your string of traditional Christmas lights by looking for the bulb that is “burned out” by looking at the tiny little filaments in the light bulbs to see which bulb is “burned out” or has lost it's filament. Many times the bulb will be “smoked” as well.

How do you shorten 3 wire LED lights?

1:193:21Shorten Christmas Lights // How-To - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe easiest and best way to shorten lights wired in series is to shorten by removing an entireMoreThe easiest and best way to shorten lights wired in series is to shorten by removing an entire section by cutting where there are only two wires. With the lights. Unplugged.

How to fix Christmas lights

It’s a problem many of us have encountered. The functioning string of Christmas fairy lights you tidied away last year doesn’t work at all this year. Or maybe it’s that individual bulbs aren’t working now you go to hang the string as part of your holiday decor.

1. Inspect the Christmas lights

This is an important step that should be carried out before you even plug in your Christmas lights, but it is important as it could reveal a problem that needs fixing before you try switching the lights on.

2. Check the fuse

Plug the Christmas lights in. Entire string not working? Check the fuses in the plug, and be aware that there might be two of them.

3. Look for faulty bulbs

Wondering how to fix Christmas lights if the problem is that one bulb isn’t working?

3. Mend a section of Christmas lights

Perhaps the problem is that a whole section of the lights isn’t working? ‘Christmas light strings share a circuit so when one isn’t firmly attached, it throws out the entire circuit which means the others aren’t going to light up either,’ explains Andre Kazimierski, CEO, Improovy .

4. Deal with a faulty shunt

The problem with Christmas lights may be a faulty shunt. Use the Christmas light repair tool available at Amazon as directed in the instructions. Test the lights by plugging them in.

How do you know which bulb is out on Christmas lights?

You might be able to see which bulb is out on Christmas lights simply by looking.

What happens when a light bulb goes out?

The current runs down the cord, through the bulb and out into the cord again to the next bulb. A broken bulb breaks the flow of electricity.

What happens if a plug won't light?

If the whole strand won't light. If the whole strand won't light, then chances are the fuse in the plug is toast. Take a look at the plastic box part of the plug, then pry open the little door with your nails or a flathead screwdriver.

How to check if a bulb is connected to a socket?

Put on a pair of protective gloves and firmly grasp the bulb with your index finger and thumb. Some bulbs screw in, so look to see if the base of the bulb is connected to the socket or if the bulb is inside the socket. If the bulb is inside, pull. If it's connected, twist the base.

How to remove a black fuse?

If they are black or the strand in the center of the fuse is broken, the fuse needs to be replaced. With a small flathead screwdriver, remove each of the fuses out by leveraging your screwdriver under the metal end of the fuse and popping it out. Replace them with the extra fuses that came with the lights.

How to pull a bulb out of a socket?

Pull the bulb straight up from the socket, though. Pulling at an angle can make the bulb break off in the socket. If the bulb is already broken, use a pair of needle-nose pliers to pull the bulb from the socket.

Do Christmas lights need to be replaced?

How Christmas lights work. Energy.gov. If you have lights with a parallel circuit (if they're LED, they have a parallel circuit for sure), you'll still need to replace the burnt out bulbs, but a huge section of the strand won't be affected. It will be easy to see which ones are bad when you plug them in.

How to hang Christmas lights on a tree

The guide below will help you hand your Christmas tree lights like a pro.

What causes a section of Christmas lights to go out?

It’s important to know that shorter Christmas lights consist of a single long circuit. But longer Christmas lights consist of several different circuits connected. These lights are called incandescent lights. Therefore, if a section of the light is not working, there is a problem affecting one individual circuit that powers the affected bulbs.

How do you know which bulb is out on Christmas lights?

There are two ways to find a bad bulb on Christmas lights: You can manually check each bulb for signs of shorting or using a light tester.

How to use a Christmas lights tester

Typically, Christmas lights come in series. This means that every bulb must be functioning for the entire string to illuminate. Therefore when you have bad bulbs on your strand set, it’s crucial to identify the defective bulbs, remove them and replace them.

How to test Christmas lights with a multimeter

Most people test Christmas lights using the non-contact voltage tester, which is also relatively easy to use. But most people don’t know you can also use a multimeter for the same job. A multimeter is slightly more challenging to operate because the probes have to be in direct contact with the wires to get a continuity reading.

How to fix Christmas lights when the whole string is out

If the entire strand of Christmas lights is out, the lights are likely on a single circuit. This series involves electricity passing through each bulb to complete the circuit and light up the Christmas set.

How much power do my Christmas draw?

How much electricity your Christmas lights use depends on the size and type of bulbs, whether incandescent or LED. Incandescent lights wattage is 80-90% more than LED lights wattage; therefore, the cost for incandescent lights will be about 90 times more than LED lights.

Step 1

I have bags of replacement bulbs scattered through my garage, but the creativity of the light producers results in light sockets of many shapes and sizes, none an exact fit to the string under repair.

Step 2: Repairing an Individual Light

Fixing an individual light is easy. Let's assume the green socketed lamp on the left is bad.

Step 3

Bend the wires down from the bad lamp (green socket) and good lamp (red tip).

Step 6

Bend the legs. You now have a working light that will fit your defective string.

Step 7: Finding the Bad Spot

If the bad string of lights is embedded in a tree, you might consider a light repair tool (I can't personally vouch for this--reviews are fairly positive).

Step 10

You will start with 50 dead lights. Unplug the lights. Go to the center of the bad area and remove one light (I use a tiny flat blade screwdriver to pry the bulb assembly from the socket). Press one probe (we'll call it probe A) against the right side of the lamp socket. Press the other probe (probe B) against one of the flat blades of the plug.

Step 11

In theory, each bulb has a shunt, so filament failure should not cause a blackout.

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