How to adjust the image on the TV. Blurred image on TV
Many of those who become happy owners of high-quality widescreen TV, as a rule, prefer not to change the existing settings of the image, taking them for granted. But in many shops in order to attract buyers, the picture is specially made brighter and more saturated. Such settings are well suited for the exhibition hall, but not for the living quarters. That is why, in order to adapt the image of the TV to the existing conditions of your room, you should abandon the pre-sale installations.
This article is about how to properly adjust the image and sound on modern widescreen TVs. The configuration will take place in several stages. First of all, you need to properly use the basic audio and video controls available in virtually all known TV models. Next, go to the settings for watching movies in DVD format. At this stage, you need to fine-tune the sound and image. And completes the process of setting up a professional calibration, with which you can significantly increase the value of any modern TV.
Basic settings
The picture quality can become noticeably better even when using the standard controls that are available in most modern TV models. The following tips will help make the image more realistic and close to the author's idea.
Outside illumination
It's no secret that many people like to watch movies under low lighting conditions, or even without it. However, TV manufacturers recommend using a light source with adjustable power to achieve the best image quality. And this advice should be adhered to as owners of widescreen projection screens, and small TV sets. Also, remember that from viewing in a darkened room the eyes of a person get tired much faster.
An excellent option for solving this problem will be a matte light source, installed directly behind the TV. For small CRT-TVs and plasma panels, a fluorescent lamp with a light temperature of 6500 degrees Kelvin is suitable.
In the daytime, deteriorate the image may glare from the sunlight on the screen. To prevent their occurrence, you should close the windows with thick curtains.
After you set the lighting that corresponds to the conditions for viewing the movie, you can proceed to setting up the image. In bright lighting it is better to use the modes "Bright", "Standard", or "Sport", and for the conditions of the shaded room, a custom user mode is used.
Backlight matrix
With this parameter, the illumination level of the LCD cells of the matrix is set and the brightness of the screen is determined. In the factory settings, as a rule, the backlight level of the matrix is set quite high. When it is lowered, viewing the image becomes more comfortable in low light conditions. However, at a significant reduction, the picture loses its expressiveness, because, as with contrast reduction, small details on the screen become invisible.
The accuracy of setting the backlight level of the matrix "by eye" is difficult to determine, but this parameter should be set first. The easiest way: to set the regulator in the middle position, then turn on the screen any bright scene, turn off the lighting and start viewing for 10 minutes. If during this time, your eyes will become tired, you need to reduce the backlight by 10-20% and continue to look. If fatigue is not observed, on the contrary, you can increase the level by 50% and repeat the described procedure again until an optimal value is found.
Brightness
The brightness of the image is determined by the level of black color, so for its correct installation you need to display a picture with an absolutely black element. Excess brightness diminishes the color saturation and is characterized by a flat colorless image. From the reduced brightness, the detailing in the shadow areas of the screen decreases and the difference in the gray areas in the dark picture disappears.
To set the brightness, connect the DVD player to the highest quality of the TV's inputs. Include some large-format film (with dark horizontal stripes at the edges of the image) and choose a plot where the number of dark and light areas on the screen will be approximately equal. Then set the maximum brightness value and start to reduce it gradually until the gray bars on the screen become black. If the details on the shaded areas are lost, then the set brightness is still quite high. For some models of LCD, plasma and projection TVs, a special installation disc is included in the basic configuration for adjusting the brightness of the screen.
Contrast
Contrast is the relationship between the darkest and the brightest parts of the image. This parameter also affects the full light output of the display and the intensity of the bright details of the picture.
In the standard settings of the TV, the contrast is usually slightly overestimated. This is done to ensure that the screen image when selling is more spectacular. Increased contrast reduces the detail of the picture and distorts the outlines of objects. In shaded areas, it can cause increased eye strain of the eyes, and in addition it reduces the life of CRT-TVs and plasma panels. With reduced contrast, the expressiveness of the image is lost.
You can set the contrast using a still image of a light object on the screen, which has visible dark details (for example, dark buttons on light clothing or dark objects against the background of snow-covered landscapes). First, the contrast control is output to the maximum, and then smoothly reduced until the moment when all the dark parts become clearly visible on a light background. Usually, the optimal contrast of the screen for the eyes is within 30-50% of the maximum position.
Color
Saturation, or the color of the image, is a parameter that determines the intensity of the color component of the image. Excessive chroma reduces the realism of the picture on the screen and makes it too mottled. It's easy to see at the increased red, which can also be aggravated by a color television decoder. Reducing the color leads to a loss of expressiveness and makes the image dim. In the zero position of the color level control, the picture on the screen becomes black and white.
The color setting is started by moving the color temperature controller to the minimum position ("Warm"). Next, you need to include the movie and find a scene in which there is a close-up of a human face with a light, gentle tone of skin. Then you need to gradually increase the color until the skin color becomes light brown. After that, the color regulator should be moved to the opposite position, until the skin on the face gets a natural shade. If the picture looks a little dull and lifeless, you can add a little color due to the loss of natural skin color.
Other tone controls
These controls can still be left in the middle position
Sharpness
This parameter makes the outlines of objects on the screen sharper. Sometimes it can soften the signal of cable television, but it can distort the image from DVD and Blu-ray discs. Setting the sharpness should begin with a decrease in the value to a position where you can notice a clear softening of the boundaries of text on the screen. Then the controller is set in the opposite direction until the text borders again become sharp.
Edge enhancement
VSM (scan-velocity modulation), or modulation of the sweep speed - the regulator of this parameter should be left in the "off" position.
Colorful temperature
With this option, the color palette of the picture is selected. When the option "Warm" is selected, the color temperature approaches the NTSC standard corresponding to 6500 degrees. Kelvin.
Other regulators
Typically, the image quality when viewed from a disc is quite good, so for viewing it is not necessary to include additional options, such as automatic color, contrast, tone, noise reduction and so on. Additional processing modes make more distortions in the picture on the screen, than improve its quality.
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Blurred image
This problem concerns more kinescope TVs (CRT), although it is also found in LCD receivers, but if in the first case it is connected with electronics, then in the second case it is with settings.
The fuzzy image on the TV can be for several reasons:
- Bad signal from the antenna;
- Faulty TV;
- Incorrect adjustment.
Weak signal
Expressed in coarse-grained images with some blurring and the presence of "snow." It is typical for both kinescope TVs and LCDs. The analog signal is significantly behind the quality of the digital signal, so it is extremely difficult to fight in this case. The effective way in this case is to increase the signal level from the antenna. You can identify it by connecting to DVD TV, the quality in this case should be excellent.
Malfunction
The malfunction will be retained when playing from any source (antenna, DVD, etc.). In this case, the blurred image will be due to a mismatch in the horizontal line voltage. The focusing voltage is removed from the TDX and, therefore, the voltage drop will change the focusing voltage. This is usually due to the loss of capacitor capacitance in the horizontal power supply circuit or network capacitor.
In older television sets of 2-3 generations, the focus is adjusted on the kinescope board (PC) by a potentiometer where it comes from the multiplier.
Focus adjustment
A blurred image can also be on the monitor if it is a kinescope, since the television "diseases" are inherent in it.
Adjustment
This happens, although it is rare enough mainly due to inattention or for some other reason, when after repair the master forgot to adjust the focus. Repair in this case will take a little time and you can do it yourself. It is necessary to remove the back cover and to achieve good clarity by turning the adjusting screw.
LCD TVs
The cases of blurred images in the LCD receivers can also be divided into several groups:
- A poor-quality signal from the antenna;
- Fault;
- Source of low-quality signal;
- Invalid connection.
Bad signal
A poor-quality television signal has already been mentioned above. LCD TVs have basically a weak own tuner, so the result of receiving an analog TV signal will be poor.
Defective TV
Fuzzy images on LCD TVs are caused by a malfunction of the backlight. Such a small decrease in the brightness of the screen is perceived as a slight blur.
Poor source
There were cases when, from the satellite TV receiver, where it would seem that the output should be an excellent signal, a disgusting signal entered the LCD TV's input, and the owner believed that the matter was in a bad matrix.
Connectivity
Most users still connect the TV set using RCA cables. Naturally, the quality of the image is reduced. Connecting the LCD through the HDMI connector can significantly improve picture quality, especially on large screens. If you get a blurry image through hdmi, you should pay attention to the cable itself and look at the 2 point, maybe it's in a bad source.
Regardless of the size of the screen, each owner of a liquid crystal (LCD, LED) TV wants to get the maximum quality from the image displayed by the screen. In order to approach the standard parameters of format, brightness, contrast, color and focus, we will use various tests of experts from Burosch.
The tests created by them are used all over the world in order to assess the quality of the image displayed by the TV screen. These tests and adjustment instructions are suitable only for LCD (LCD) TVs, not older than 10 years.
Do you need to configure the screen? Did not the producer take care of this?
From the part is true. Large volumes of production do not allow the manufacturer to perform fine-tuning of the screen, whether it be Samsung, LG, Sony, Toshiba, Sharp.
Not the least role is played by the working conditions of TV. They will always be different: the sources of the signal are different, the TV is set at different heights, the distance to the TV is different, the lighting of the room is different and there are many other aspects. Therefore, it is not worthwhile to set up the image either at the factory or in the store, but it is necessary to do it at home, in the place where the TV will be installed.
Is it difficult to set up the TV correctly? Will I need the help of a master?
Reaching the correct display of the picture is not more difficult than setting up the channels. It will take no more than 20 minutes of your time. In order for your TV to please the eye, you only need to adjust the image settings so that the test pictures are correctly displayed on the screen. How exactly should be "right" you will see below. Test pictures are selected by experts so that after the setup you can enjoy any scenes for brightness, chroma, clarity and contrast.
More about test images
Each, individually taken picture, serves for setting one parameter. In the test from Burosch there are:
- Pictures for adjusting the five main parameters: format, brightness, contrast, color and focus.
- Pictures with test zones for simultaneous setting of several parameters
- Pictures for professional calibration
- Several real pictures for checking
Test pictures for each parameter
Used to fit a single parameter. After setting this parameter, you will need to switch to another picture and adjust another parameter.
Test pictures with several test areas
Applied when you want to configure quickly or when an inexperienced user is setting up the setting. In these images, you can set up five basic parameters at once.
How can I display test pictures on TV?
To display test images on the screen, use a USB drive (previously having recorded files from the archive), if your TV is equipped with a USB input, if there is no USB input, output the image from your PC / laptop.
Download the archive with the files you can by. Save this file and unzip it. Write the unzipped files to the USB stick, and then insert it into the corresponding TV socket.
We proceed to configure the screen
First you need to select the source of the signal on the remote control.
To do this, press the Source or Input key and select the image source: USB stick (or the corresponding HDMI input if broadcast from a PC / laptop).
Next you need to enter the TV menu: to do this, press the menu button on the remote and go to the image settings. At different manufacturers the menu button is called differently: it can be Settings, Options, Menu. In the picture below the most common remotes.
If you have difficulties with entering the menu - in the instructions for the TV you can find a description of this procedure more precisely, specifically for your model. When you enter the menu, you will see something like:
Setting the Screen Format
In order for the format to be configured correctly, you must disable the scaling function (overscreen, upscale) in the menu.
Brightness adjustment
The correct brightness setting is achieved when all gradations of gray are clearly visible against the black background. To do this, move the brightness parameter slider in the menu with the keys of the remote control until all the gradations of gray are visible.
Contrast setting
The correct contrast setting is similar, with brightness adjustment, differs only in that now the background is not black, but white. The correct option is when you see all the gradation of gray on a white background. To do this, move the slider of the contrast parameter in the menu with the keys of the remote control until all the gradations of gray are visible.
Color Adjustment
Adjustment of color saturation and color temperature is performed according to the hue of human skin. In order to get the correct color settings you need a test picture with the women on it. They have different skin color, adjust the adjustments so that the skin looks natural. To do this, move the color parameter slider in the menu with the keys of the remote control until all the faces look natural.
Focus setting
Sharpening settings should be performed after fine-tuning the format described above. In order for the TV screen to display a clear image in the test picture, it is necessary to obtain the most accurate representation of the intersections and lines. To do this, move the focus slider (sharpness) slider in the menu with the keyboard keys until all the intersections are visible.
Having completed these settings, exit the menu, remove the USB flash drive, turn on any movie or TV program. After these, your TV is set up to pleasantly watch videos of any content: from dynamic action movies to documentaries about nature.
