TV has lost the picture

TV has no picture but has sound

Last update: November 14, 2023

Has your television lost the image and the screen is black?

You don't have a picture but you can still hear the sound and change the channel?

First of all, you have to understand how televisions display the image; televisions are made up of an LCD or liquid crystal panel where the image is generated, but this panel does not have the capacity to light up on its own, so they need additional lighting that is located behind this LCD panel, a series of light bulbs that provide luminosity and brightness to the image.

In old LCD televisions this lighting could be of the fluorescent type but now everyone uses LED lighting that is more energy efficient and allows the manufacture of thinner televisions.

A very common failure in modern televisions with a led lighting panel is that one of the led bulbs can break and with it the rest of the panel of LED bulbs stops working since they are connected in series.

This does not mean that all the bulbs have burned out, it is usual that only one of them is burnt out, but if we want to avoid problems in the future, all the bulbs should be replaced with new ones.

Many people may think that when they see the screen completely off, the television has become unusable and they discard it, especially considering the prices of new televisions, since a new television can cost little more than the repair of an old one.

Even so, we encourage you to look for a nearby technical service to check the price of the repair or in case you dare to replace the LED lights yourself, you can find these new lights for about 35 or 40 euros on Ebay or another type of specialty stores.

By repairing your television, you contribute to reducing the amount of electronic waste, which is also very difficult to recycle, as well as contributing to a local economy and a culture of repair.

Electronic devices such as televisions are composed of a large number of materials that are difficult to extract and find, so by repairing them we can give a few extra years of life and in the process save money that we can use in the purchase of a future television of higher quality or benefits.

How to know if the LED lights have burned out without disassembling the TV?

Checking if the LED lights that illuminate the image have broken or melted is quite easy, we only need to use a flashlight or light source, for example, we can use the flashlight of our mobile phone and from very close illuminate the screen and check if you can see the picture.

If you can see the image of the television signal, even if it is very weak, it means that there is a fault in the illumination of the rear panel of LED lights, this fault is usually due to a broken bulb, although in the worst case it can be due to a failure in the power supply of the led bulbs.

How to replace the LED lights on my TV?

First of all, it should be noted that repairing an electronic device such as a television has some risks that you must assume if you want to do it on your own instead of taking it to a technical service, of course you must disconnect the television from the electrical current before starting and you must follow the safety recommendations that appear in the tutorials that you find on the internet.

When repairing a television, you must bear in mind that a small mistake can render the device unusable and that it can cause damage to health if the proper precautions are not taken.

You need to find out the name or model of your TV, you can find the model number on the back of the TV.

Using the name of the TV model, you will be able to find where to buy LED bulbs, either on eBay, fix it.es, impextrom.com or any other online store of replacement parts.

You can consult videos on YouTube that show step by step how to open, replace the light bulbs and close the television and ask questions in forums such as https://www.nadiemellamagallina.com/en .

LG TV LED Light Replacement Video

Even if you can't find the video or tutorial for your exact TV model, you can search by brand or using the first letters of your TV model. Normally, TVs of the same brand are very similar and the process is practically the same.

How to check if LED bulbs work?

Once you have opened the TV before disassembling the light strips, you can check which of the bulbs is broken, in this way you can check if it is a problem with a broken bulb or LED strip or if the problem comes from the power supply.

You can check the operation of the bulbs with an LED tester or if you don't have one, you can do it using three 9V batteries connected in series and connecting two cables as explained in the following video.

Of course we warn of the risk and danger of carrying out a tester with batteries, the cables in contact with metal produce sparks that can cause a fire, while it is not being used, the batteries must be separated.

Always carry out assuming these risks, we are not responsible for misuse and we always recommend going to a specialized technical service.