![]() It simply cannot reflect light and project what needs to be projected in all areas. Should something interfere in its ability to work, black spots emerge as a sort of dead spot where the image will not be displayed. All kinds of things can go wrong from the DMD chip not spinning anymore.Ĭhips spin fast enough to send the light in the right direction showing an image on the screen. These electronic chips are the main element that mirrors the received image from the LCD projector into the lens and project the image onto the screen. There’s often even a prism in some units that further help with light blending and color splitting. It spins with light bouncing off of it, dividing color, and allowing light and reducing light to create white and black. As the name implies, Digital Micromirror Device, the DMD Chip has a mirror that spins. On a very simplistic level, most projectors have a component that spins. Indirect black spots will appear if it’s burned some elements of the LCD projector inside or parts of a DSP projector have been melted or burned due to heat. ![]() It will shut down due to heat consumption on the unit this happens a lot, but it is not directly related to black spots. Some newer projectors have an internal thermometer. You can often hear the fan working overtime to try to cool it down. Remove anything near the fans that would keep it from ventilating properly. Often projectors have a few pegs that act as legs allowing it to be raised from the stand where it sits this allows the fan to cool units that heat up as it projects an image on the screen. ![]() Things can go very wrong if you let your projector overheat. Your projector should never heat up so that it’s too hot to touch. If you are finding your projector is not very well ventilated, and is virtually hot enough to cook an egg, the fix may not be so simple. Simply put, there can be burned internal elements or broken DMD/DLP chips. Why they occur is more difficult to explain. They also don’t look like dust normally, they’re much larger and cut out major sections of the image. If there are black and white spots and it’s all across the projected image, then it is more technical.Īny host of things can cause these black spots. If there are a few small spots across the projected image when the projector is on, it’s likely dust on the LCD Projector inside or on the external lens. Dirty or Dusty LCDīlack spots have varying sizes. You need to be sure you can rule out all options before sending it off to a repair shop and paying for new parts and labor to match. There’s a lot that can go wrong to cause black spots to appear. Projectors often use a small Liquid Crystal Display (LCD) combined with Digital Light Projection (DLP) technology internally that is magnified and sent through a lens to project onto a screen. ![]() Projectors 101Ī projector, in essence, takes a source from either a TV, computer, gaming console, Blu Ray DVD player, or some other media and translates it into a projected image/movie/game onto a screen. Here are some quick ways to find out what exactly is wrong so you can get back to watching, gaming, or even teaching at 100%. Everyone knows it’s really frustrating to be watching a movie or playing a game and have those small interruptions like black spots to cloud the clarity of the image. You will need to have a specialist work with your unit, or-if it’s out of warranty and you’re handy-take it upon yourself to fix it. It could be overheating, or a major technical fix is required. However, if black spots persist after cleaning, it can be way more technical. What do black spots on a projector mean? Small black spots can mean either that the external lens or the internal LCD projector element inside is dusty. Let’s get your projector working like new again. Here are some simple answers to a complex device that may have a simple fix to needing specialist help. Black spots appearing on the projected screen can become an issue that can be cryptic to diagnose. ![]() If you’ve ever owned a projector, you know that it works well until things go awry. ![]()
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