Tutorials

How to use a tester to test a TV LED screen

Testing the LED screen of a TV with a multimeter in an easy way can be quite a useful task. Televisions have become a widely used tool in recent times.

Since the creation of the new technology in televisions, such as the ‘Smart Tv’, other equipment has been displaced, primarily secondary devices such as: DVD and Bluray.

Those who have a ‘Smart TV’ do not have the need to use the equipment mentioned above, since they enjoy having access to the internet, from there they can download any type of content, such as games, applications , movies, series among others.

Is it possible to measure the voltage of an LED?

The LEDs have a common characteristic that unites them, and it is denoted as joint voltage, based on it the division of the LEDs is made. The measurement is possible, for this you only need a device that can measure the junction voltage, whose output voltage will be within the range of 9V to 16V. But this is achieved with the direct use of the multimeter or tester.

How do you use a tester or multimeter?

Its use is simple, since it only requires calibration to obtain the exact details about what you want to measure. Now, all the calibration is already done at the factory, so it is only required to detail what aspect you want to measure, remember that there are different multimeter presentations on the market with more advanced functions than others.

However, its use is generalized on the connection action between the equipment and the element to be analyzed or measured, for which the tips of each terminal are positioned in the resistance that will be the object of the measurement; once linked, it is positioned on the symbol that you want to know the value or voltage.

How do I examine the LED lights on my screen with a multimeter?

Testing the LED screen of a TV with a multimeter in an easy way, seems to be one of the tasks most used by a technician. To do this you must uncover the TV and determine if it is a Smart TV or a normal TV.

Also, you should have a multimeter on hand, then you should look up the display’s datasheet to find the positive and negative leads and, if they have a pin attached to the display’s millions of LEDs.

Set the multimeter or tester in the diode test function, then locate the pins on the screen, connect the multimeter leads in their indicated position, positive and negative.

Then observe the screen when making a connection of the pins, you should be able to see even one illuminated LED, remove the cables after each test and repeat the procedure until you check all the LEDs on the screen.

test the led display of a television with a multimeter

If you can not see light in any of the LEDs, it means that it is not working and, logically, it is damaged. If a considerable amount of LEDs are damaged, you will have to discard the screen or change the TV.

How to improve the image quality of my TV with the LED check?

Testing the LED screen of a TV with a multimeter in an easy way and controlling the image of a TV, are actions that television users must frequently perform. Knowing if a TV is HD 4K or Full HD , it may be unknown, anyway to improve the resolution you must know the model.

There are occasions in which the image of a television is not seen in the best way, which causes a great problem for users, since it prevents the enjoyment of any content.

You can try to go to the configuration of the image of your TV, then, locate the option ‘Image quality’, if there is an active image attenuator you must deactivate it immediately. If that’s not the problem, find out if the ‘Power Saving’ mode is active.

Disable ‘Power Saving’. However, if the image continues to look bad, you could try going to the resolution of the image, selecting the highest resolution or the one recommended by your Smart TV or TV. If all of the above still does not show a positive result, it may be time to call for service.

technical tutorial test led tv screen with tester

How to know if the internet connection of my Smart TV is slow?

Testing the LED screen of a TV with a multimeter in an easy way, provides a way to occupy the time. On the other hand, there are problems while surfing the net, especially when the user proceeds to connect the Smart TV to the internet.

One way to determine if a network connection is slow is to do it through a Smart TV, for this, you must determine if it is not a problem with your internet provider. If not, go to the browser of your Smart TV.

Then, in the search bar type ‘Speed ​​test’, choose the page that catches your attention from the search results, once it loads, you start the speed test and, you wait for the results.

Before being able to determine if the connection is slow, you must know what type of plan you have contracted, to compare the results with the amount of ‘Megabytes’ that your provider grants.

Then, establish the difference between the results of the speed test and the plan you have contracted, if the result is lower it means that the internet is very slow.

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