Many people don’t mistake a blurry picture on TV for a severe problem. In many cases, you can fix it yourself with instructions and menus. But that’s only if you’ve adjusted or changed the settings. However, a blurry picture on the screen often signals a problem that requires professional help. If you need to know whether someone has changed the settings, do a factory reset, do not press all the buttons at once, and disassemble the device yourself. It is better to apply to professionals.
Even a fuzzy picture on your TV causes a lot of discomforts when watching TV. The quality of the photograph should allow you to see the details; otherwise, the presentation of the film will not be comfortable for the viewer. However, you should know that you can try to fix a fuzzy or blurry TV screen yourself, and here’s how.
Why is the picture blurred on TV?
A blurry picture on your TV is a common problem that can occur on all TVs. The causes of the malfunction can be divided into two categories: hardware and software. In the case of hardware problems, blurring is caused by a failure of an internal component. Depending on the type of TV, there are three types of faults:
- LED. This problem occurs very rarely. There may be a blurred picture, or the image goes in waves; this is a software error, usually corrected by a software update. Much more rarely, faulty backlighting can cause artifacts to appear on the TV screen.
- CRT. Obsolete TVs were discontinued in the mid-1990s. If you notice a blurred image on the screen of a cathode ray tube TV, it means a physical failure of the kinescope (displacement of the light beam or a crack in the cathode ray tube). Is not repairable due to a lack of replacement parts.
- Plasma – Due to the matrix’s design features, Plasma TVs rarely have problems with screen clouding. But they are characterized by burn-in, which is associated with a change in the gas composition in the cell (pixel) related to the operation time. The service life of plasma TVs is 10-15 years; the production of such TVs was discontinued in 2013.
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How to adjust the clarity of the TV screen
It used to be more common for the viewer to see a blurry TV screen due to improper settings, but primarily due to poor video reception. This was in the era of analog television; now, it is no longer relevant. Almost all countries have switched to digital broadcasting.
Most built-in TV tuners and converters have fine-tuning and noise-reduction features. And there is no noise in digital channels; the image is encoded, and if the signal reception is poor, the image is scattered into squares. Some TVs have a screen cleaning and calibration feature, usually OLED TVs. Simpler TVs may have test programs to check the screen.
Now back to the clarity settings on your TV screen. If you’re having problems, look at how the TV reproduces from different signal sources. I’m not talking about RCAs; the analog signal will always be worse in quality. Check how the TV shows from HDMI and cable TV. HDMI cables should also be checked. I have experienced blurry and double images connecting a TV through 20m HDMI. A disturbance in the timing of the signals caused this effect. I take my laptop, connect a short HDMI cable to the TV and check the picture quality. This is the easiest way to check the picture quality of your TV.
LED TVs have a picture sharpness setting; this setting should improve the picture, but in practice, depending on the type of display (its quality), it can cause a blurring effect at high settings. Set this setting to an average value.
What are the ways to fix the blurry image on TV?
If you bought a new TV and noticed a blurry picture when you connected and watched it, or if you saw it on your old TV, chances are your TV is broken. But check some of the settings that can cause a blurry picture effect.
Maybe the original image is of low quality, this happens if you broadcast video footage shot with a low resolution analog camera then digitized. Due to the small number of pixels in the original image, the image becomes blurry when scaled.
Work with the different sharpening and image modes of your TV. Be sure to test this on a channel with a lot of motion. Sharpening will improve the picture, but if you over-sharpen, you may leave noticeable marks on moving objects. Set this parameter to 30-50.
Check the cables
As I said earlier, check the cables or replace them.
Check to see if the TV is affected by external interference.
It’s scarce, but the TV can be affected by an external device. I have seen the TV react to a WiFi router next to it. The picture would get distorted and wavy.
If you have tried all these things and you still see a blurred picture, try contacting the service center of the company that made your TV. You may be offered to send a technician or take your TV to a service center for inspection, diagnosis, and subsequent repair.
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What kind of defects damage the image in LED TVs?
In LED TVs, the image is transmitted through millions of crystals that rotate in their cells, and diodes backlight the screen matrix. If the TV screen is cloudy, it means the glass was originally made of the wrong material, and it is also possible that the displays or TVs are not stored properly. For example, displays do not tolerate storage in poor conditions, especially with high humidity. The most common breakdowns of LED displays – are mechanical damage, failure of backlight, and matrix controller.
If you accidentally damaged the display while watching, you quickly noticed that the image was not as clear; there were streaks or no vision. This tells you that you have a malfunction in the pixel control circuits of the matrix. You cannot ignore this malfunction. It would help if you replaced the matrix, but there is a pattern here, the display is 80% of the cost of the TV, and it is tough to buy a show separately for several reasons. Matrix screens are not freely available; you can order through a service center and wait 3-4 months for the arrival of the spare part. The cost of the display plus the work is the cost of a new TV. It is easier to buy a new TV.
If you fail to backlight, you can replace the LED strips. But to do this, you must disassemble and reassemble the display correctly. This happens most often with equipment from cheap display manufacturers.
How to Check the Functionality of LED Backlighting in a TV Display
To verify that the source of the malfunction is in the backlight, there are two possible ways to check. Look in the dark to see if the screen is backlit, the screen should be slightly illuminated, and the second option is to inspire the net from behind with a flashlight, for example, from your phone; this requires removing the back cover of the TV if you see any image at all. The backlight is faulty. Seek help from a repair shop.
The controller controls the display. If the controller is not working properly, it is faulty or has bad contacts in the loop. This happens, but rarely, you can try to check. If you have the skills to disassemble the TV and repair it, check the loops. If you don’t have repair experience, it’s better to trust a professional.