A dead pixel is a situation where a specific pixel on a digital display loses its functionality. This situation can occur during the production stage of the monitor or during subsequent uses. Dead pixels usually appear as black or white dots and can generally be found anywhere on the screen. So, how can you perform a dead pixel test on your monitor and what should you do if you encounter a dead pixel? In this article, we answer these questions.

What are the types of dead pixels?

• Dead pixel: It is a pixel that does not show any color.
• Stuck pixel: It is a pixel that constantly burns in a certain color (red, green, blue).
• Hot pixel: It is a pixel that constantly burns in white.

How is a dead pixel test performed?

You can follow the steps below to perform a dead pixel test on your newly purchased or currently used monitor:

• Clean the screen: First, you should clean your monitor’s screen nicely. Dust or dirt can appear like a dead pixel.
• Go to the dead pixel test: There are many free dead pixel test tools on the internet. These sites make it easier for you to detect dead pixels by creating backgrounds in different colors. Open the dead pixel test site from here.
• Start the test: Start the test by following the instructions on the site you chose. You are usually asked to switch to full screen mode.
• Examine the screen: Carefully examine your screen during the test. If you see a black dot or a dot that constantly shines in the same color, this may be a dead pixel.
• Check different colors: Test sites usually offer backgrounds in different colors. By checking each color, you can detect dead pixels more easily.

What should you do if there are dead pixels on your monitor?

The dead pixel test is an important process you should do when purchasing a new monitor or if you are experiencing image problems on your current monitor. Each manufacturer has different policies regarding the acceptable number of dead pixels on their monitors. Before purchase, you must definitely research this topic.

Dead pixels generally cannot be repaired but some stuck pixels may correct on their own by keeping the monitor off for a long time or by using a screen protector. If your monitor’s warranty is still valid, you can request a replacement due to a dead pixel.