Before doing that, make sure you remove the dust using a towel. For the fine dust, use a liquid that is non-alcoholic and non-corrosive. For the sticky dust, do not apply pressure use the microfibre cloth and gently apply in a clockwise direction. Applying more pressure will lead to screen damage resulting in backlight bleeding. If you are cleaning the apple MacBook screen, be extra careful as a replacement could be very expensive. If you don't have a cleaning kit, don't worry, you can also use distilled water with the softest cloth you can find at home, if done properly, this is as effective as the cleaning kit. Use the full screen and increase or decrease your brightness to check your display's contrast. You can also determine your display type using this technique. Turn on the full black screen in a dark room. Check if the pixels are completely turned off if it's not, you can actually see the screen dark gray. If it's dark grey, it's LED otherwise, it's OLED. You can also test your screen refresh rate by opening a random color screensaver. If there is an issue with your display, the colors will not fade and will not appear as expected. We have had users thank us for helping them identify that their new monitors' refresh rate is abnormal due to manufacturing defects. They had them replaced on time.Īnother use case is identifying your backlight level. To check, open the complete black screen and closely observe if the light from each corner is equal. When Windows 10 was introduced, many users complained of uneven backlight distribution whenever their screen was black.
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