Why did the color disappear on the TV? Colors gone: red, green, blue

Companies such as LG, Samsung, Sony, Philips and other TV manufacturers are constantly striving to improve the picture quality on their devices, creating models with stunning brightness and a wide variety of colors. Modern television and cinematography have long left their black-and-white past, competing for the reality of the transmitted image. That is why problems with the color of a TV can be considered very serious, comparing them with a complete failure of the device.

carries out professional repairs of televisions of any brand. In this case, the master will perform it at home, traveling at the client’s request in Moscow and the Moscow region from 7:00 to 23:00, seven days a week. You just need to call and our employee will arrive at the appointed time. We guarantee excellent quality and minimal time costs. You can also leave a request on the website and we will call you back.

Probable causes of the malfunction and their elimination

When color or contrast disappears on a TV, or a predominance of one color is observed, there can be many reasons for this behavior. We will consider only the most popular of them, first focusing on those that can be corrected by the user himself.

Problems with TV settings

Very often, such problems are associated with incorrect TV settings. This is not a breakdown or malfunction, but simply a system failure. It can be caused either by careless handling of the switches in the menu, or by a small power surge.

Repair

This defect can be corrected as follows:

try turning off the TV from the network, and then turning it on after 10 minutes;
further in the menu, make adjustments to color, brightness, contrast and other parameters, since there is a possibility that an overestimated indicator of one of the characteristics gave such a result;
If none of the above helped, then try resetting the settings to factory settings using the corresponding menu item.

Problems with signal reception settings

Very often, the reasons for this behavior of TVs are related to the signal reception settings. On older models, there is a possibility of confusing the SECAM and PAL modes, which turns the picture into black and white. Also, incorrect settings for the reception of analog channels can give a similar result, especially if it is combined with a weak signal level.

Repair

Troubleshooting such problems is done as follows:

try adjusting the antenna or searching for channels again;
check in the menu settings that the signal type matches the settings, namely the SECAM and PAL values;
try resetting all settings to factory settings;
Quite often, problems do not arise in the TV itself, but in the supply, player or other device transmitting the signal, which can be checked by disconnecting it.

Strong magnetic fields from other devices

If you have a CRT TV, then it may be affected by the magnetic fields of other equipment or the screen demagnetization system may be faulty. Typically, plasma and LCD TVs do not have these disadvantages. Therefore, specific repairs are necessary.

Repair

If the screen is magnetized, use the following tips:

turn off the TV for 10 minutes and turn it on again;
if necessary, repeat the procedure several times;
if the device has a special button or combination of buttons for demagnetization, then it is worth using it;
move away all extraneous electrical appliances or other sources of magnetic radiation from the TV;
if the problem is not solved, and the defect is precisely the magnetization effect, then you need to use a special device, which is usually available to service center technicians.

Firmware problems

Modern TVs are equipped with their own software that is responsible for control. Very often they exhibit certain glitches or fail completely due to minor changes. As a result, there may be no sound, the picture quality may change, or the color red, green, or blue may become contrasting.

Repair

Troubleshooting such problems is done as follows:

if the menu is available to you, then you need to connect the TV to the Internet and perform a regular update using a special item;
some models support updating from a flash drive, which involves downloading from the official website to a similar medium;
Some software failures require a complete firmware update of the TV, which is best done by a technician who has the necessary equipment and software.

The color adjustment board has failed

If, in addition to the main defect, the TV exhibits spots, stripes, color flickering, iridescence and other malfunctions, then this is most likely due to a problem with the color adjustment board. For some TV models it is part of a specific block, while in other devices it is made in the form of a microcircuit.

Repair

It is not recommended to repair this element yourself. Even from the same manufacturer, such boards may look different and be located in completely different places. Therefore, you need to call a technician, indicating the type of fault and the model of your TV. This will allow him to immediately take a certain supply of parts that may be required during repairs.

Repair

In such cases, it is enough to disconnect the TV from the network and wait a while to turn it on again. If the defect with color change becomes smaller, repeat the operation, and if it disappears, then great. To prevent this from happening in the future, at least once a year, turn on the TV with the button to demagnetize the kinescope.

Replacing a posistor

Otherwise, if incorrect colors remain on the monitor or TV, then it needs to be repaired. The operation is not complicated. We disassemble the TV and look for a posistor on the chassis; it is not difficult to identify it by the nearby plug from the demagnetization coil. They look like this

PTC resistors

change it and look at the result. The resistance of posistors is different, it is advisable to change it to a similar one, but if you don’t have one at hand, then you can install another one with similar parameters and preferably higher, so as not to cause a break in the demagnetization coil. For example, if a posistor with a resistance of 9 Ohms is installed, set it to 11 - 14 Ohms.

Warning

Even if you are absolutely sure what malfunction or problem is present in your TV, you should not start repairing it yourself. First of all, such a decision will deprive you of the warranty from both the manufacturer and the service center where the previous repair was performed.

You also need to understand that to perform most of this type of work you will need an expensive tool that does not make sense to purchase for one time. In this case, specific knowledge may be needed, the absence of which is guaranteed to lead to an improvement in the situation.

Even if you are a certified electrician and are perfectly familiar with the operating principles of modern electronics, you may not be able to repair the TV yourself due to lack of experience in working with clients with a model or product of a certain manufacturer. Therefore, you should entrust this work to professionals who deal with it every day and know the intricacies of assembling televisions from various manufacturers.

If colors have disappeared on your TV or the screen has stopped working, then first of all it is recommended to check the settings and try to make adjustments yourself. This is all that the user can do with his own hands without causing more harm. If this does not help, then you need to call a specialist who can cope with any breakdown, spending a minimum of time.

The new TV began to show black and white images

When a new TV shows in black and white, first of all, it is recommended to contact a warranty service center (if the device was purchased from official distributors). In accordance with the purchase and sale agreement, they are obliged to solve the problem, replace broken ones with original spare parts taken from their own warehouse, or completely change the equipment. The screen of a new TV does not display correctly if the connection is made incorrectly. The colors of the plugs correspond to their purpose :

Red, white - mono and stereo audio (all audio tracks).
Yellow—composite analog video signal (showing pictures without sound). In standard mode, it receives and transmits video signals of PAL, SECAM and NTSC standards. The colors are transmitted together, the removal of the fork completely removes the color.
Green, blue - component video signals. They are transmitted without sound (connected separately), and served separately (unlike the previous option). The separation of the socket plug is characterized by partial and single loss.

Factory defects also cause black and white footage to appear.

What to do if the TV shows everything in blue tones

When the TV shows blue, as in the previous version, the problem may lie in the settings. Other reasons:

The thermistor is broken. It controls the temperature. Inside the apartment, the temperature can change, but the thermistor keeps it in the hardware at the same level. If it breaks, overheating occurs.
Magnetization of the kinescope. There are other parts nearby that create a weak magnetic field. It gradually affects the kinescope until it stops working.
Poor contact. If the plug comes out, you will need to call a repairman to your home. Therefore, it is recommended to examine all connections and connections.

Tricolor TV says “no signal”

You will have to take slightly different actions if today Tricolor TV does not show and says “no signal”. In this case, the source of the problem is poor reception.

Typically a weak signal is associated with:

bad, rainy weather;
interference that interferes with the operation of the antenna;
ice or water on a satellite dish;
incorrect rotation of the antenna;
cable break.

The simplest way to correct the situation now is to simply check the equipment. It is enough to go and see if there is any interference and make sure that the antenna is in the correct position. To do this, you can compare the angle of rotation with the location of the neighbors' plates or simply press the i key on the remote control twice. This will cause the reception quality scale to appear on the screen.

Usually, after performing these actions, access to the broadcast is restored, and subscribers get the opportunity to again enjoy their favorite films and programs.

The screen is dominated by red, green or blue

This problem can be easily fixed with the help of a technician. Without the appropriate knowledge and experience, you risk your health and property. Don't waste your time, devote it better to friends, family, children.

Summarizing all of the above, we note that there are no breakdowns that a specialist could not fix. The only question is whether the repair is justified. If the device is old and you have been planning to change it for a long time, then do so. In other cases, repairs will cost much less than buying a new TV.

Advantages of contacting a service center

Our service center is open daily from 8 a.m. to 10 p.m., excluding weekends and holidays. The experts provide professional services; they understand both the software of modern equipment and its technical components. You can submit an application for a visit from a qualified specialist via the Internet. Diagnostic procedures are carried out at home, then the professional begins work on repairs, software updates, and flashing the device. Most importantly, we provide a guarantee because we are confident in the qualifications of our workers, the quality of the parts and the performance of the tools used.

Diagnosis of failure

There are a lot of options for TV breakdowns that lead to a lack of color in the image.

. Sometimes it is not a breakdown that causes the problem, but a minor malfunction or a simple misunderstanding.

Try to find out the cause of the TV malfunction and take a number of simple and safe actions.

Check:

reliability of the antenna connection, plug,
cable integrity,
signal reception strength of the channel/channels,
settings on the TV (contrast, saturation, color system).

You can fix the antenna better, retune the channels, adjust all the settings, and also replace the faulty cable with a new one yourself.

If everything is in order with the external communications and settings of the TV, to find the cause of the lack of color you will need to open its case and carry out a full diagnostics.

Attention!

In most cases, diagnostics and repair of televisions carried out by non-professionals lead to worsening breakdowns and final failure of this type of household appliance.

Repairing a TV, like any other complex equipment, without sufficient experience and knowledge, is potentially dangerous to health and life!

If you want your TV to start showing again on the same day when the image on its screen disappeared, call a VseRemont24 technician to your home at any time convenient for you.

A certified specialist will come to you without delay with all the tools necessary to repair your TV.