Does the TV change color, shows an inverse image, does one of the tones disappear or predominate? This problem is faced by owners of old CRT receivers made by JVC or Supra and those who bought a modern flat-panel Samsung or Panasonic. The cause of the problem depends on factors such as signal quality, type of TV (CRT, LED, plasma panel), age of the device, natural wear and tear of electronic components, etc. In simple cases, the problem can be solved independently. If we are talking about damage to internal components, you should call a repairman.
Service engineers will quickly come to your home, conduct diagnostics, identify the source of the defect and fix it in a matter of hours. To order an inexpensive TV repair in Moscow, call us at our number or place an online order for a technician to visit you through the website.
Why did the screen turn green?
If the TV shows green, it is difficult to determine the fault yourself:
- Transistor failure. The green video amplifier breaks through, as a result of which the screen is painted in one tone, only the shades change.
- The cathode is closed with the modulator.
- There is a capacitor leak.
- Emission lost.
Yellow-green shades appear as a result of incorrect settings or a damaged microcircuit .
In what cases can you troubleshoot problems yourself, and when can you not do without a teleworker?
If the color on your TV suddenly goes off, don’t rush to call a technician right away. You can restore a normal image yourself in the following cases:
- problems with the antenna or antenna input;
- Incorrect TV settings.
If the picture changes color and is simultaneously reproduced with stripes, “snow” and other interference, the source of the malfunction should be sought in the receiving antenna. Check its functionality and correct connection to the appropriate connector. If interference is coming from the set-top box, you can turn it off for a while and turn it on again.
If the screen color has changed, you should check that the image settings are correct. Modern TVs from Philips, Sony, Samsung and others have a special color menu that can be adjusted manually by adjusting the tint palette of the image. If the correction does not produce results, you can return to the factory settings (resetting all parameters and setting them to default when turned on).
If the colors are reversed on modern flat panel models, it may be due to outdated software. Check that the software is up to date and reinstall it if necessary. If, when updating the firmware, the colors still change places or one of the tones disappears, you will not be able to fix the problem on your own.
If the problem cannot be solved by these methods, then its source must be sought in a malfunction of the control module, color rendering system, or individual components of the electronic boards. In this case, you cannot do without the help of a qualified teleworker, since without special skills it is impossible to correctly determine the cause of the defect and quickly eliminate it.
TV shows red picture
If your TV shows red, check your settings. Common human factors often cause problems. You probably accidentally increased the red saturation.
Sometimes the source of trouble is the antenna. The signal arrives from the satellite in normal mode, then is transmitted from the antenna to the TV incorrectly. It can distort colors, the picture disappears, and so on. Failure is characterized not only by a loss of quality, but also by associated failures (streaks, ripples or spots).
due to dust . Dust damages the surfaces of parts. Sooner or later this will lead to errors or complete failure of the equipment.
DIY repair
Do-it-yourself TV repair is allowed in case of trivial breakdowns, such as lost settings, loose plugs, etc. More complex cases are dealt with professionally. You can open and get to the hardware of the equipment if you have the appropriate skills.
If there are none, contact our company: we will repair any type of TV: CRT, plasma or LCD. We are open daily from 8:00 to 22:00, and you can contact us by number 8 , or through the feedback form on the website. You can order a technician to come to your home at any time convenient for you. Upon completion of the repair, a quality guarantee is provided for the work done.
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.
Why you should entrust the solution to your problem to our specialists
How Remontano service specialists work:
- We work with TVs from all manufacturers (Sony, Daewoo, Samsung, LG, Toshiba, JVC), regardless of the type of product and year of manufacture.
- We quickly and accurately determine the source of the problem and offer the client the best way to solve it.
- We use only original components.
- We repair equipment at home within one to two hours, without taking the equipment to the workshop.
- We guarantee low prices for services and a high level of quality of work performed.
Experienced service engineers who know exactly how to correct color problems on a TV of any type and model will work to solve your problem.
The colors have been swapped, one of the colors is missing
If the colors on the TV have changed, you need to look at the characteristics of the programs and check if there is a firmware update. Software for modern technology plays an important role. Some models download updates themselves, for others this is done by the user using his computer.
When the color of the TV screen not only changed, but one hue disappeared, the corresponding color block is probably out of order . In this case, contact the service center. It is important that he has his own warehouse of original spare parts. It is not recommended to install non-original parts, as they quickly break and can harm adjacent boards and circuits.
- LEDs for LED backlighting of TVs. Where to buy and reasons for failure.
Prices for TV repairs at a service center
Name of service | Price |
Visit of a specialist to your home (with continuation of repair work) | For free |
Diagnostics (with continuation of repair work) | For free |
Replacing the matrix | 1700 |
Replacing a TV tuner | 2500 |
Replacing the charger connector | 1600 |
Replacing HDMI, audio, USB connectors | 1800 |
Power supply repair | 2500 |
Cleaning the motherboard from liquid | 1200 |
Control unit repair | 1100 |
CPU replacement, controller replacement | 1600 |
Backlight repair | 1800 |
Replacing the motherboard | 1200 |
WiFi repair | 2500 |
Replacing the backlight lamp | 1400 |
TV tuner repair | 1250 |
Replacing the Memory Battery | 450 |
Control unit firmware | 1100 |
Restoring BGA contacts, connectors, ports (per 1 pc.) | 400 |
Power circuit repair | 3500 |
Software setup | 1200 |
Hull repair | 2200 |
Troubleshooting methods
When a blue screen appears on your TV, you should first determine its type. The next step is to find the origin of the problem itself.
- If there is no signal, dealing with the defect is quite simple. It is necessary to reconnect the antenna or cable that supplies the signal . If such actions were not enough, you can use the method of selecting the appropriate mode. The reason may lie in an incorrectly set mode, which leads to a disruption in the signal. After setting the correct mode, the blue screen will disappear, and the TV will begin to show a full image.
- A malfunction of the matrix leads to failure of the liquid crystal household appliance. If you know the relevant nuances and use the necessary skills, you can establish criticality and replace the internal part yourself.
IMPORTANT! If you lack the proper knowledge, repair work should be entrusted to a professional.
- Many users, when trying to turn on a movie or series online, are faced with “lack of memory” on the TV . This is due to the limited capabilities of the TV itself. You can solve the problem by not using the browser . To watch movies or listen to music, manufacturers recommend using applications installed on the device platform.
ADVICE . In some models, you can cope with a small amount of memory using a software update.
- If the unit responsible for the signal or the video amplifier malfunctions, it is recommended to seek advice from a specialized service . The technician will be able to determine the exact cause and carry out repair work.
Blue screens can occur on both new and long-used TVs. In many cases, you can cope with such a problem yourself, using several proven methods.
In the digital age, television has become an integral element of every home. But, like any household appliance, televisions sometimes fail.
The most common defect is a blue screen. The cause of this malfunction is many factors, including the type of device itself.
In most cases, you can deal with the problem yourself.
Causes of blue screen
The appearance of a blue screen instead of the usual picture is a common problem of image distortion. Experts note that such a defect directly depends on the type of household unit itself. Knowing the type of device, it becomes much easier to determine the cause.
- When a similar malfunction occurs on a CRT TV, the most common reason is the failure of the blue video amplifier. The occurrence of a defect can also be affected by interruptions in the memory of the household appliance itself.
REFERENCE. Stable operation can also be affected by a failure in the small signal processor that forms the image.
However, this factor occurs extremely rarely.
- Plasma devices are the most popular on the market today. The reason for the appearance of a blue screen lies in the malfunction of one of the blocks that are responsible for processing the signal.
- Liquid crystal and LED devices are high-quality and expensive technology. However, they are also susceptible to this defect. The source is disturbances in the operation of the matrix or its complete malfunction.
REFERENCE. Possible factors also include temporary loss or complete absence of signal.
How does the problem manifest itself?
If there is no picture, but the audio track is still playing on the TV, you can easily solve the problem yourself.
First you need to decide on the type of malfunction, because it can manifest itself in different ways:
- There is no picture (maybe just a black screen), but the channels are switched and the sound volume is adjusted using the remote control;
- Lost image with inability to navigate through channels . At the same time there is sound. Often, instead of the sound of the saved TV channel, error signals are heard;
- The backlight does not work. If a picture appears when you hold a flashlight (or other light source) close to the screen, the LED backlight on the TV has stopped working. The image is there, it’s just that the eyes practically don’t perceive it;
- Picture distortion. The system changes the image proportions, TV channels are shown in poor quality, and so on;
- The color scheme has changed , the picture has become dull;
- The TV works, but while watching the screen turns off spontaneously and turns on again after a reboot.
Fig.2
Please note that other types of problems may occur, but the options described above are the most common. The remaining distortions are mostly related to problems with the signal or Internet connection.
The indicator is constantly on
If the LED lights up, this indicates that power is being supplied to the control unit. If the TV does not respond to signals from the remote control, the first thing you need to do is try to turn it on directly using the panel buttons. Perhaps the malfunction lies precisely in the incorrect operation of the remote control, and not the TV itself. If this is indeed the case, you need to take the following actions:
- Check the condition of the batteries and contacts for oxidation.
- Make sure that the emitter is intact and that the remote control buttons are not stuck.
- If possible, disassemble and clean the inside of the remote control from dust.
- If the remote control was filled with liquid and stopped working, have it repaired or purchase a new one (preferably the original one - it will last longer).
If you can’t start the TV from the panel, there are two possible scenarios.
Protection triggered
In this case, the TV may try to start, but after a few seconds the screen goes blank, or does not turn on at all. The main reason for this problem in most cases is power outages in the home network. This could be voltage fluctuations or power cuts and starts while the TV is in “sleep mode”.
The most effective way to solve the problem is to completely disconnect the device from the network for a while, not with the remote control, but to unplug the power cord from the outlet. This will be enough to restore functionality if the TV does not turn on after turning off the lights. If the voltage problem is constant, you will have to use a stabilizer, uninterruptible power supply, or at least a surge protector. And when leaving home, it is better to completely turn off the TV.
Processor or control failure
The diagram shows that the LED indicators are controlled via the Stand By wire and transistor Q211. If a short circuit occurs, the TV stops turning on.
In such a case, you cannot do without contacting service specialists. Attempting to carry out complex repairs yourself can completely damage the TV.
Simple Ways to Fix a Black TV Screen
The breakdown appears at different times - on old and new TVs. If in your case the warranty period has not yet expired, find the coupon and contact the store where the device was purchased.
This will provide free repairs if the damage is serious and cannot be easily fixed at home. If the screen is dark but you can hear sound, try checking the following items:
- The antenna cable may not be connected tightly to the jack on the TV. It may be broken or not fully inserted. Try reconnecting it to the TV and check the result;
- Another type of cable is also connected to the TV, which transmits the signal from the tuner. The end is divided into three parts, each plug has its own color: white, red, yellow. Separately, they are responsible for outputting image, sound and antenna signal. If one of them is turned off, the TV may not show;
- Most digital tuners also have the ability to receive radio signals. On the remote control there is a special button for switching to radio channels. You need to try to turn off the mode; perhaps you accidentally turned it on on the remote control;
- Short-term malfunctions occur that can be resolved by turning the TV on/off.
If your home has an AC stabilizer, you must connect the device to the network using it. If you manage to get rid of the malfunction in this way, then you were able to determine the cause - low voltage.
It is recommended to use all household electrical appliances through a stabilizer in regions where voltage interruptions occur frequently. Mostly these are small towns and villages.
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Hello! There was such a problem with Samsung CS-29K5ZQQ. It worked, at some point the screen turned blue and there were light stripes, 1-2 millimeters thick with a slope, all over the screen. It broadcasts sound, switches channels, NO images! There is no entry to the service menu! and there is no image from the DVD! At the time of failure, the voltage in the network was 205 V. (although in the passport it is from 160-240 V.) Perhaps this is a common breakdown and an experienced person can immediately tell what went wrong? because It's a long way to the nearest workshop. I’m comfortable with a soldering iron and can order the required part. Thanks in advance for the tip!
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Can you attach a photo.
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Can you attach a photo.
Hello Birluk! Can . but later (the batteries were discharged (((. )
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Most likely the video amplifier microcircuit (it is located on the kinescope board) is probably labeled TDA6109JF, but first you need to measure the power coming to it - 200 volts from the line supply and the entire power circuit to the microcircuit.
Not knowing is not a shame, not learning is a shame!
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BELAND, very likely VAS8052 brightness is adjustable. The state of the kinescope, video amplification modes, ABB (automatic white balance), transmission of the PCTS signal, reset to the service menu (in your case it may not work “for the future”), try to add memory, connect the DVD to it, try connecting another TV through the scart OUT, will it work or not. The menu itself is there. (maybe somehow it’s visible). Go for it, there is some food for thought
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Can you attach a photo.
Hello . Everyone, thank you for your response! I posted a photo here. And, TDA6109JF - there is one on the kinescope board. Once again, many thanks to everyone! I will dare, there is information for thought! (as noted by birluk) IMG_1127.jpg IMG_1126.jpg IMG_1124.jpg
In the digital age, television has become an integral element of every home. But, like any household appliance, televisions sometimes fail.
The indicator does not light up, the TV does not turn on
Such symptoms most often indicate that the cause of the malfunction is a lack of power. If the light bulb simply burned out, the TV would work as usual, but without an indication. Don’t worry ahead of time and call a specialist. Initially, it is necessary to exclude all variants of the problem that are available for self-correction. Moreover, in a large number of cases the problem is caused by rather banal reasons, including:
- No power to the electrical outlet.
The circuit breaker in the panel may turn off, or perhaps the socket is faulty. Checked using a conventional indicator screwdriver or tester. If there is no power, the machine is inspected. Even if it is turned on, it is better to “click” it several times. Did not help? You need to look for a problem in the outlet or wiring yourself or with the help of an electrician. - Extension cord malfunction
(if connected through it). When a direct connection to the outlet ensures normal operation of the TV, but there is no power through the extension cord, this is the problem. If it is a surge protector, you need to check the power key and fuse. In any case, to fix the problem you need a working device. - The Network button on the TV is turned off
. On almost all models of modern TVs, when the “Network” button (can be located at the bottom, side or back of the TV) is disabled, it becomes impossible to control the device using the remote control. The On/Off button on the control panel must be activated. - Incorrect mode selected
. The TV in this case works absolutely normally, but if one of the modes is not used, for example, AV, PC or Receiver, the screen darkens and may enter “sleep mode”. You need to select the TV function again, and the picture will return. - Failure of any part
. This could be a microcircuit or a capacitor, or perhaps a power supply or control system (for example, a button is broken). It is better to entrust testing the performance of various components of the TV and carrying out the necessary repairs to the specialists of the relevant service center. - Blown fuse
. For CRT TVs, this is the actual reason for the lack of power. If it is located in an accessible place, it is quite possible to replace it yourself.
Extraneous sounds when the TV is not working and there is no indication
Sometimes TV owners experience clicking or other sounds inside. Symptoms may vary:
- The TV does not turn on, the indicator blinks, the relay clicks.
- The light doesn't light up, the TV clicks.
- The TV beeps and won't turn on.
The most common causes of clicking noises on TVs are:
- Activation of the locking system
. If certain types of faults occur (power supply or other units), the protective function is activated. It is designed to avoid more serious damage in the event of a malfunction. It is the blocker that makes characteristic clicks when the TV tries to turn on. - Heating and cooling of plastic housing parts
. So, even a working TV can click. - Providing a signal about an activated (not used for a long time) operating mode from the selected source
. In this case, TVs may squeak or whistle.
The cause may be a transformer, microcircuit or transistors. In this case, the TV does not turn on at all. You can’t do this without a qualified craftsman.
Setting up the TV after the fix
Connectors for HDMI or AV
Even if the situation with the video signal transmission is corrected, things do not always end there. It happens that the image is not displayed as before, with glitches, flickering, interference, and simply the settings may have gone wrong.
What to do and in what situations:
- if the function of the built-in decoder (broken) has been transferred to an external digital set-top box. To access television broadcasting, it is enough to select not a DVB-T2 channel, but another, for example, HDMI or AV (depending on which one is used);
- matrices have their own properties and subtleties of image output, therefore, after replacing it, you may need to re-set the parameters of brightness, contrast, and so on;
- If you are using analog TV and the digital set-top box for it has changed, you will have to restart the search for TV channels. If this is a simple T2 device that “sees” 20 channels, auto-search is enough. Advanced receivers are configured manually following the instructions.
In other situations, the TV settings are not lost, so they are left as they are. But you will have to tinker with the parameters of the receiver (or other device with which it is connected).