Why does my Samsung TV have sound but no picture, and what should I do?

The life of a modern person is inextricably linked with technical achievements and innovative developments that improve the work process and organize leisure. One of the most demanded technical developments is the TV, without which no living space can be imagined. The high intensity of use of devices often provokes their breakdown, which cannot but upset the owners. Image fading is one of the most common technical problems that can be diagnosed and fixed both independently and with the help of specialists.

Samsung products have been a leader in household appliances sales for many years. This trade mark produces products of high quality and reliability. Despite positive product reviews, TV owners often face a problem when there is sound but no picture.

Experts recommend paying attention to the main reasons that the image has disappeared:

• technical problems of the power supply;
• violation of the color block;
• cable malfunction;
• malfunction of the matrix;
• inverter breakdown;
• malfunction of the decoder and decoder.

Competent and professional diagnostics of the TV is the key to a high-quality and quick fix of the problem. The first thing that experts recommend checking is the cable. The list of diagnosed devices includes the following elements:

• HDMI;
• antenna cable;
• wire from the provider;
• plugs.

These elements must be examined as carefully as possible, trying not to miss anything. The brief appearance of the image is an undeniable sign of antenna breakdown.

One of the most difficult malfunctions is a problem with the matrix, and the following symptoms indicate its breakdown:

• image instability;
• the presence of a picture on half of the screen;
• the appearance of multi-colored stripes.

Experts pay attention to the fact that the most common cause of matrix breakdown is the fall of the TV, as well as strong blows to it. The complexity of this malfunction lies in the impossibility of eliminating it on its own, as well as in the high cost of spare parts, the price of which often reaches the cost of a new TV.

Frequent voltage drops will surely provoke a breakdown of the capacitor, the malfunction of which will be indicated by the following symptoms:

• fast extinction of the screen;
• the disappearance of the image immediately after a few minutes of work;
• problems with the brightness of colors.

You can visually detect a malfunction by removing the back cover of the TV and inspecting the capacitor, which must have a swollen shape, and in some cases can smoke and explode.

The disappearance of the image, the appearance of ripples, noise and distortion are signs of a malfunction of the fragile matrix loop, which is often beyond the power of even experienced craftsmen to repair.Experts recommend completely replacing the damaged device.

To determine a breakdown in the backlight lamps, you must turn on the TV in a dark room and shine a flashlight into the monitor. A sign of a breakdown is the appearance of an image in the illuminated area. It is impossible to select and replace a damaged part yourself, so you need to contact a workshop or service center for help.

Inverter breakdown signs:

• distorted image;
• when turned on, the appearance of a sound at the beginning, and after a few minutes of an image;
• excessive darkening of the screen;
• ripple image.

To diagnose a breakdown of the power supply, experts recommend performing a number of manipulations:

• dismantling the back panel;
• checking the integrity of the wires and the performance of the fuse;
• checking all capacitors;
• voltage level testing;
• image change with slight tapping.

Having basic skills in repairing household appliances, you can restore the picture on the screen yourself at home. However, not all problems can be solved by yourself. Often, repairing a TV requires special professional skills, as well as the availability of specialized equipment. Experts recommend paying attention to the list of repair work that can be done at home:

• replacement of a damaged cable;
• restoration of the image due to a significant increase in sound;
• correct installation of the antenna plug in the socket;
• adjustment of software settings;
• improving the quality of the incoming signal.

You can independently check the performance of the wire using a special program that allows you to test the quality of the transmitted audio and video signals. To carry out repair work, the following manipulations must be performed:

• press the button with the image of the house on the remote control;
• go to the "settings" menu;
• select the "support" section and then "self-diagnostics";
• set the command "start image test".

The program will identify all faults and automatically give recommendations for their elimination.

All types of software violations can be corrected independently, using the program tips and manufacturer's instructions, but it is better to entrust the elimination of technical faults to masters from specialized service centers.

If, after setting up the software, it was not possible to get rid of the malfunction, and the diagnostic measures revealed technical problems, experts recommend not starting the repair yourself. A TV is a complex mechanism, careless and illiterate handling of which can provoke its complete failure, and the lack of specialized equipment will not allow most of the repair work to be carried out at all.

One of the most difficult breakdowns is the breakdown of the inverter, which supplies voltage to the lamp and regulates the start of the backlight. The inverter chip blocks are located near the power supply. Standard manipulations of specialists:

• checking the incoming voltage;
• checking the passage of the command to start lamps from the motherboard;
• replacement of lighting components;
• elimination of burnt links.

Any master in the field of household appliances repair can qualitatively replace the device.

A quickly resolved problem is the repair of the backlight lamp, in which the cathode often burns out. Specialists simply replace the elements with original components. The process of replacing the board consists in unscrewing the fixing bolts. With special tools, you can avoid the need to open the matrix. A complete replacement of backlight lamps and matrices is carried out only if, under the influence of high temperatures, the lamps are soldered to the microcircuits.

Also, specialists must repair the power board and filter capacitors, which most often fail. It is imperative to connect the power supply, inverter and lamps to new capacitors.

Despite many years of production and use of televisions all over the world, this device continues to be a complex technical mechanism that often fails. Manufacturers are constantly working on improving their models and introducing new functions, which can be difficult to understand even for professionals.

As mentioned above, it is highly discouraged to independently solve technical breakdowns due to the possible infliction of more significant damage by unprofessional manipulations. Also, experienced craftsmen do not recommend ignoring even minor faults that can provoke global problems.

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