Some projector users may see several black spots or dark spots on the screen or image. What are the causes of the black spots? How to fix them?

The black spots or dark spots mainly be caused by the following three factors.

Dust

The screen image may be affected by the black spots if the external lens or optical elements of the projector are covered by too much dust. You can clean the lens carefully with a soft cloth and try again.

In addition, if your projector has a filter screen, you can try to clean it. The filter screen can’t be installed until it is completely dry.

You’d better buy a projector with a sealed optical machine to avoid dust accumulation.

Overheating

Sometimes, the black spots are caused by overheating. You can power the projector off after a long time of use (4-6 hours) to avoid overheating.

Broken display Chip

If you have excluded the two occasions above, the display chip of your projector may be broken. If the chip is broken, the black spots are small but inerratic with a large area. You can contact Customer Service and then replace the component.

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2 Comments

  • Ashish kumar, May 10, 2022 @ 09:52 Reply

    Knowledge
    For ki next generation

  • Mehran Sohal, June 13, 2022 @ 20:14 Reply

    I think overheating is a common issue. If the black spots on your mini projector are very dark, it’s possible that your mini projector is overheating. The internal parts of the projector won’t be getting enough air or cooling themselves down when the mini projector is overheating. These parts are going to stop functioning properly. Black spots will appear on the part of the projector screen where less or no light is reaching if the lamp of your mini projector burns out or gets dim. A black shadow on the projector can be caused by the overheating of the other internal parts and the melt of the other internal parts. If that is the case, you will need to get those parts replaced by a professional.

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