How to Repair a Projector

By Kristopher Riggs

Projectors are devices used in some dedicated home theaters as a video source. These units can be very expensive, and repairing is usually more economical than replacing. Also, most projectors require routine maintenance causing users to eventually learn how to repair certain parts after they have become worn or obsolete. Repairing a projector takes a few common tools and can be done by users with little to no experience.

Things You'll Need

  • Slot-head screwdriver
  • Phillips screwdriver
  • Canned air
  • Projector bulb (if necessary)
  • Exhaust fan (if necessary)

Step 1

Remove the projector from the ceiling mount if necessary. Place the projector on a surface upside down to access the disassembly screws. Use a phillips or slot-head screwdriver to remove the screws and remove the projector's casing.

Step 2

Flip the unit right-side up and locate the projector headlamp. Remove the lamp by unscrewing any mount screws and pulling the unit out of the slotted port. Dispose of the lamp properly; they typically have a high levels of mercury. Install a recommended lamp replacement and secure the lamp mount back into place. Use the canned air to remove loose dust from the unit.

Step 3

Locate the main exhaust fan, typically found in the front or rear of the unit. Remove any screws securing the fan to the projector's casing and unhook the molex power adapter. Replace the exhaust fan with a manufacturer-recommended fan and install into place. Use the canned air to blow any loose dust outside of the unit after installation.

Tips & Warnings

  • The most common repairs for projectors involve the lamp and the exhaust fan. Other more complex components like the connection plate, LCD panels, DLP wheel, and any electrical components generally require maintenance from the manufacturer. Attempting to repair these components will likely void the projector's warranty.
  • Be mindful of the electrical components inside the projector. Most of these parts are prone to static damage. Other components, like capacitors, can cause personal injury from electrocution.