How to Clean Dust From a Projector

Written by kevin ann reinhart
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How to Clean Dust From a Projector
Digital projectors require periodic maintenance. (glass of water on table with projector behind image by Dmitry Goygel-Sokol from

All digital projectors produce heat while in operation. The heat is dispersed through fans equipped with filters to capture any dust that may get into the projector. Regular maintenance is required to clean or replace clogged filters. Most manuals that come with the projectors specify a recommended maintenance schedule based upon hours of use. Dusty conditions may require your projector to be cleaned more frequently. If you detect a green dust blob visible in dark areas on a projected image, it is time to clean your projector's filters and LCD panels.

Skill level:

Things you need

  • Towel
  • Can of compressed air
  • Screwdriver
  • Bits as needed

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  1. 1

    Place a clean white towel on a flat surface at a convenient height for working. A workbench or table is fine. Invert your projector on the towel.

  2. 2

    Pull on the tabs that keep the centre panel in place to reveal the fans beneath. The position of the fans may vary with the make and model of your projector. Look for grill work or latticed portions on the bottom and/or back of your projector to locate the fan openings.

  3. 3

    Remove the fan covers by using the black tabs to turn the grills until they release. Take the grills outside. Place the red tube that came with your can of compressed air into the spray hole on the tip of the can. Spray the grills to clean them. Set the grills on your towel inside in preparation for reassembly.

  4. 4

    Locate and remove the screws on your projector that are holding the outer casing in place. Make note of the location of each screw by placing it on the towel near the spot from which you removed it.

  5. 5

    Open the projector as you would a door with the lens closest to the fulcrum or hinge. Disconnect the two wired connectors entering the white junction boxes on the bottom panel. Make note of their locations.

  6. 6

    Disconnect the top panel from the bottom. Locate the three LCD panels inside. These look like copper coloured tape. Tilt the projector onto its side. This will prevent any liquid in the compressed air from getting onto the LCD screens. Carefully spray a good amount of air into the cavity holding the LCD panels.

  7. 7

    Put your projector back together using the dismantling steps in reverse order. Your projector should perform well for another 300 or so hours of use.

Tips and warnings

  • If your projector has very small screws, it may be wise to invest in a set of jeweller's screwdrivers available for purchase at most hardware stores.
  • If your projector does not have readily identifiable locations for disassembly, refer to your owner's manual or contact the manufacturer for advice before taking your projector apart.

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