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How Do You Know If Your TV Fuse Is Blown?

One of the most common items in your home is the television. Televisions are made for entertaining us! From watching movies, series, and news – there is never a dull moment. Kids love to watch their favorite cartoons, and some shows are educational for teenagers. If your TV does not want to switch on, it can be caused by a blown fuse. How can you fix it? What can you do?

You can easily identify a blown TV fuse if you have problems switching on your TV set or have a black screen. You must have a look at the fuse wire. The TV fuse is blown if you see a noticeable gap in the wire or a black metallic smear inside the glass.

When you buy a TV, you do not always think of what might happen. Instead, you think of how it will entertain you and your family. Quality time with your family is spent watching HBO or the ever-popular Netflix. How will you know if a fuse has blown? We will give you the answers you need! Let us investigate how to identify this problem.

How Do You Check For A Blown Fuse? 

If you think your TV may have blown a fuse, you can inspect it in a few ways. First, look for any noticeable damage to the fuse itself.

If there is any discoloration or charring, this is a good indication that the fuse is blown. Another way to check is to use a multimeter to test the continuity of the fuse. If the fuse is blown, the multimeter will show infinite resistance.

Where Is The TV Fuse Located?

Locating your TV fuse depends on your TV’s make and model. When changing a fuse, you should consider a few factors. Is your TV set a plasma, LCD, LED, CRT, or the rear projection type?

When you want to change the fuse, it is critical to know the model, and year, including other specifications. These specifications work specifically on your TV. It is pivotal to do proper research!

Keep your user manual close at hand. You will find helpful information in the manual. 

Can A Overloaded Circuit Cause A TV Fuse To Blow?

An overloaded circuit is one of many common causes of a blown TV fuse. A blown fuse is a result of excessive power which is drawn to the circuit. If a circuit is overloaded, the breaker will trip regularly and shut off your power. A circuit can blow when too many appliances are plugged in at once. 

It is best to replace a fuse the first time it blows (though it is advisable to do some basic checks for shorted components). If the new one blows, there is a significant problem.

If you have a blown fuse the second time, it can cause more damage, complicating the troubleshooting process. At this point, all the TV fuses you buy will only be to keep the fuse manufacturer in business!

Some signs of an overloaded circuit include flickering lights and buzzing noises from your outlets or switches.

Can Faulty Wiring Cause TV Fuses To Blow?

If your TV fuse blows, check the condition of the wiring before you replace the fuse. Faulty or loose connections lead to blown fuses regularly.

Can A Multimeter  Be Used To Detect A Blown Fuse?

A multimeter is a device that can test whether a fuse is functional or blown. It is one of the most common methods used by electricians. Below are steps to follow when testing with a multimeter.

  1. The leads should be placed on one end of a fuse.
  2. The second lead should be placed on the other end of your fuse.
  3. When the multimeter shows a reading between 0 and 5 Ohms, your fuse is in perfect condition.
  4. The fuse is likely wrong or degraded when you receive a higher reading on your multimeter.
  5. When your multimeter shows a reading of OL (over the limit), the fuse is blown and needs replacement.

How Can You Replace Your TV’s Blown Fuse?

The first step would be to locate an electronic screwdriver to perform this task. There will be a lot of screws when you remove or replace a fuse. It is essential to keep the screws in a bottle to ensure you know where they are. You will be reusing the screws. 

You will continue to remove the back panel of the TV. It can be located under the thermal block if you are working on a thermal fuse. To locate the optical block, refer to your TV’s user manual. The user manual usually shows where you can locate it in a diagram. 

The majority of these fuses are located on the motherboard. The motherboard is also known as the power supply board. Ensure that you switch off your TV and remember to unplug the power supply before executing any of the tasks mentioned above.

Unfortunately, a blown TV fuse causes many technical issues in your television’s system. Do not be shocked if you end up with a black screen! A blown TV fuse can also lead to performance issues. It can be easy to change the fuse, but sometimes, it is best to take your TV set in for repairs.

How Do You Check If A Fuse Is Working?

In a single-phase circuit, you will need to check the voltage at both ends of the fuse to the ground. If you notice that one is dead, this indicates a blown fuse. You can also remove the fuse from its circuit, then check end to end across the fuse for continuity.


Televisions must be taken care of, just like any other home appliance. Always place it in a safe space where there is no moisture. The best way to deal with any problem regarding your television is to refer to your user manual. By following our advice, we will have you and your family enjoying your favorite sitcoms and movies on your TV in no time!