How To Test A Fuse With A Multimeter (Voltmeter | Ohmmeter) For Beginners | Continuity Test

Summary

In this tutorial, the host demonstrates how to test a fuse in a standard plug using a digital multimeter. The video covers the necessary equipment, safety precautions, and step-by-step instructions for testing continuity. The multimeter is set to continuity mode, and the host explains how to check if a fuse is working by looking for an audible sound and a small reading on the device. The video also emphasizes the value of having spare fuses and a multimeter for fixing devices that may be discarded due to a simple fuse issue. The tutorial is informative, easy to follow, and aimed at beginners.

Takeaways

• 😀 Always ensure the plug is **unplugged** before starting any testing or repair work for safety.
• 😀 The **continuity setting** on your multimeter is used to check if there is a connection in the circuit, indicated by a beep and a small reading.
• 😀 **Continuity testing** doesn't depend on the polarity, so you can use either the red or black probe on any end of the fuse.
• 😀 A **blown fuse** will show no reading and no beep when tested with a multimeter, indicating it needs replacement.
• 😀 Keep a **selection of fuses** (3A, 5A, 10A, 13A) on hand, as different devices require different fuse ratings.
• 😀 Before replacing a fuse, **test the new fuse** with the multimeter to confirm it works before installation.
• 😀 A **digital multimeter** like the MasTech MS8268 can be a helpful tool for basic repairs and troubleshooting electrical issues.
• 😀 Fuses are often the **only issue** in devices that stop working, especially with old or discarded electronics that others might have thrown away.
• 😀 Testing a fuse with a multimeter can help you **avoid unnecessary part replacements** by confirming if the fuse is the real problem.
• 😀 **No special tools** are needed for this process other than a multimeter, making it an easy and accessible fix for most people.
• 😀 If you don't feel comfortable handling electrical components, always consider seeking help from a **professional technician**.

Q & A

What is the main purpose of the video tutorial?

The main purpose of the video tutorial is to teach viewers how to test a fuse in a standard plug using a digital multimeter.

What tools are required for testing a fuse in a plug?

You will need a digital multimeter and a standard plug with a fuse, which could have different amperage ratings like 3A, 5A, 10A, or 13A.

Why is it important to ensure the device is unplugged before testing the fuse?

It is crucial to ensure the device is unplugged to avoid the risk of electrical shock while working with electrical components.

What is the significance of the continuity setting on the multimeter?

The continuity setting on the multimeter is used to test whether there is a continuous electrical path in the fuse, which is essential for determining if the fuse is working.

How can you tell if the multimeter is working properly before testing the fuse?

You can test the multimeter by connecting the two probes together. If the multimeter beeps and shows a small reading, it indicates the multimeter is functioning correctly.

Do you need to remove the fuse from the plug to test it?

No, you do not need to remove the fuse from the plug. You can test the fuse while it’s still in place by touching the multimeter probes to both ends of the fuse.

What should you do if the fuse is broken and needs replacing?

If the fuse is broken, replace it with a new fuse of the correct amperage rating (3A, 5A, 10A, or 13A). You can test the new fuse with the multimeter before installing it.

Why is it beneficial to keep a supply of fuses on hand?

Having a supply of fuses ensures that you can quickly replace a blown fuse without waiting for a new one to arrive, which is especially helpful for troubleshooting faulty electronics.

What are some common devices that might be thrown away due to a faulty fuse?

Devices such as TVs, studio lights, and other electronics may be discarded by people who mistakenly believe they are broken, but often the only issue is a blown fuse.

How can testing fuses with a multimeter save money?

By testing fuses with a multimeter, you can avoid unnecessary replacements of the entire device or costly repairs, as many devices with blown fuses are still functional once the fuse is replaced.