Why do dead pixels occur

Try this a few times to see if it works. The InjuredPixels application will help you pinpoint the exact location of damaged pixels on your screen as they are often difficult to spot.

The freemium pixel detector allows you to blank out your screen in multiple colors to test the display. With such a straightforward name, you know that Dead Pixel Test and Fix DPTF is a quick and easy method for locating and potentially repairing dead or stuck pixels.

DPTF assumes the same process as its competitor apps, using a series of solid color blank outs on your screen to reveal damaged pixels. It also can help you identify stuck pixels by showing a series of flashing screens. Use the Check Dead Pixels function to look for any dead pixels on your display. If you spot some, switch to Fix Dead Pixel , which displays colored noise and bands of different colors over a set period. There are times, however, when a pixel can die. A dead pixel is a phenomenon in which a pixel on a display device fails to change color.

As previously mentioned, pixels are designed to change color. When a display device produces an image, its pixels feature the appropriate colors of the image. Dead pixels are distinguished from other pixels by remaining black at all times.

Regardless of the image being displayed, a dead pixel will remain black. Therefore, they are relatively easy to spot by turning the display device to a white or otherwise bright image. If the display device projects an all or mostly white image, dead pixels will stick out. What causes dead pixels exactly? If a problematic pixel is dead, it should look like a small black rectangle.

A dead pixel occurs when the transistor that powers it fails to supply power, causing it to remain permanently black, never illuminating. The most common cause of dead pixels is a manufacturing defect. Undetectably small errors in assembly can result in a handful of dead pixels among the millions of functional ones.

Dead pixels can also appear later on in a display's life, mostly as the result of physical damage. Here are a few things you can try to fix a dead pixel on your device's display:. Wait for the dead pixel to disappear. It may go away on its own, but there's no telling how long it will take. You might have the dead pixel for the remainder of the device's life, or it might go away in a week. Try JScreenFix. This free web app fixes many stuck pixels in less than 10 minutes.

This likely won't work if the pixels are dead instead of stuck, but there's no harm in trying. Replace the screen. The most reliable way to fix a dead pixel is to replace the screen. Many manufacturers have warranties that cover dead pixels, so check your device's warranty to see if this situation applies to you. Most display manufacturers require a minimum number of dead pixels before the screen can be replaced. For a display the size of a computer monitor , the minimum is typically four to eight dead pixels.

Smaller displays have lower minimum requirements. You can examine the dead pixel policies of Acer , Apple , Dell, LG , and Samsung , but the best source is always the device's specific warranty documents. You may come across other methods of fixing this problem yourself, including "pressure" and "heat" methods. We do not recommend trying these methods as they can make the problem much worse if not done properly! There isn't a lot you can do to fix dead pixels; most people tend to buy a new tablet, computer, or TV when pixels start going bad.

If you're not comfortable with replacing the screen yourself most people aren't , then the next step is to find a local repair shop if your device is no longer under warranty or break out the wallet.