DIY: Fixing Your Christmas Lights – Changing a Fuse Made Simple

The holiday season is always festive, and nothing adds to the cheer like a beautifully decorated home or Christmas tree adorned with twinkling lights. However, it can be frustrating when one of the bulbs goes out or when the entire string of lights stops working altogether. One common cause of this issue is a blown fuse. Fortunately, changing a fuse in Christmas lights is a straightforward task that anyone can do with the right tools and materials. In this blog post, we will guide you through the steps to change a fuse in Christmas lights, so you can get back to enjoying the holiday spirit without any interruptions.

Materials Needed

Before starting the process of changing a fuse in your Christmas lights, it’s important to gather the necessary materials and tools. Here’s a list of what you’ll need:

  1. Replacement fuses: Make sure you have the correct type of fuse for your specific Christmas lights. Check the manufacturer’s instructions to ensure you have the right size and amperage rating.
  2. Needle-nose pliers: These will be used to remove the old fuse from the light string.
  3. Small screwdriver: Some types of Christmas lights have a fuse holder that requires a screwdriver to open.
  4. Work gloves: It’s always a good idea to wear work gloves to protect your hands when handling Christmas lights.
  5. Safety glasses: If you need to use a screwdriver to open the fuse holder, wear safety glasses to protect your eyes from any flying debris.

By having these materials and tools at the ready, you’ll be prepared to tackle the task of changing a fuse in your Christmas lights efficiently and safely.

How To Identify the Problem

Before attempting to change a fuse in your Christmas lights, it’s important to identify whether the problem is indeed a fuse. Here are some signs to look out for:

  1. The lights are not turning on: If your lights are not turning on at all,
  2. A section of the lights is not working: If only a section of the lights is not working, the problem may be a blown fuse in that specific section.
  3. Flickering lights: If the lights are flickering or flashing, it may be a sign of a blown fuse.
  4. A burning smell: If you notice a burning smell coming from your lights, immediately unplug them and check for a blown fuse.

If you’ve identified any of these issues, it’s time to check the fuses in your Christmas lights. If you’re unsure of the problem, try unplugging and replugging your lights or checking for any loose bulbs or connections. It’s also important to note that if you notice any damage to the wiring or sockets of your lights, do not attempt to fix them and consider replacing them entirely to avoid any safety hazards.

Locate The Fuse

It’s time to locate the fuse in your Christmas lights. The fuse is usually located in the plug or the fuse holder, depending on the type of lights you have. Here’s how to locate the fuse:

  1. Plug type: If your lights have a plug, unscrew the end cap or pop open the plastic cover to access the fuse.
  2. Fuse holder type: If your lights have a fuse holder, locate the holder on the light string. The fuse holder is typically a small plastic box that houses the fuse.

Once you’ve located the fuse, inspect it to see if it’s blown. A blown fuse will have a broken wire inside it, and the glass or plastic body may be discoloured or cloudy. If the fuse is blown, it’s time to replace it with a new one. If it’s not blown, continue to troubleshoot the issue to identify the root cause of the problem.

Replace The Fuse

Replacing a fuse in Christmas lights is a straightforward process that can be done in a few simple steps. Here’s how to replace a blown fuse:

  1. Remove the old fuse: Using needle-nose pliers, gently pull out the old fuse from the fuse holder or plug.
  2. Insert the new fuse: Carefully insert the new fuse into the fuse holder or plug, making sure it’s securely in place.
  3. Replace the fuse holder or plug cover: If necessary, replace the fuse holder cover or plug end cap.
  4. Test the lights: Plug in the lights and test to see if they’re working properly. If the lights are still not working, double-check that the new fuse is the correct type and installed correctly. If the problem persists, continue to troubleshoot the issue.

In conclusion, changing a fuse in Christmas lights is a simple and easy task that anyone can do with the right tools and materials. By following the steps outlined in this blog post, you can troubleshoot and identify the problem with your lights, locate the fuse, and replace it safely and efficiently. Remember to always unplug your lights before attempting to change the fuse, wear work gloves and safety glasses, and ensure that you have the correct type of replacement fuse for your specific lights. Doing so lets you keep your home or Christmas tree beautifully lit throughout the holiday season without interruptions.

We hope this guide has been helpful in assisting you in resolving any issues with your Christmas lights and wish you a happy and safe holiday season.

Rusty Burlington


  • Rusty Griswold

    Since 2015, I have been building my light display to celebrate the holiday season and experimenting with various recipes to bring people together around the table. I have learned many do's and don'ts in both areas along the way, and share them with everyone via the website. M Mike
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