How to Repair a Slide Projector

By Marshal M. Rosenthal

A slide projector is still a popular way to view color slides of a family outing, trips and other memories shot with a camera. But slides often get stuck in the projector's slot because they rely solely on gravity to move them into display position. Removing the jammed slide will keep it from being damaged by the heat of the bulb.

Things You'll Need

  • Canned air
  • Clean cloth
  • Tweezers
  • Camel's hair brush
  • Cotton swab
  • Rubbing alcohol

Step 1

Turn off the slide projector and remove the power plug from the electrical socket. Wait for the bulb to completely cool down.Remove the slide tray from the projector by releasing a latch or inserting and turning a coin into a slot in the middle of the tray. Put the tray aside on a clean cloth.

Step 2

Take the canned air and blow it straight across the slot of the projector so that any dirt or dust is blown away.Take the tweezers and insert it into the slot on the slide projector. Carefully grab the cardboard frame of the slide. Slowly pull the slide straight up and out of the slot. Blow dust off of the slide with the camel's hair brush. Put the slide next to the slide tray.

Step 3

Take a cotton swab lightly moistened in alcohol and insert it into the slot of the slide projector. Twist the swab around inside the slot. Remove the swab and throw it away. Take another swab lightly moistened in alcohol and insert the swab into the slot. Rub it against the sides at the top where the slide goes into the slot. Remove the swab and throw it away. Wait for the alcohol to dry.

Step 4

Take the canned air and blow dust off from around the slot and sides of the slide projector. Pick up the slide and insert it back into the slide tray. Take the slide tray and put it back onto the slide projector. Jiggle the slide tray so that it is properly seated in the slide projector.

Step 5

Plug the power plug back into the AC socket for electrical power. Turn on the slide projector so that only the fan is on. Advance the slide tray so that a slide goes into the projector. Advance the slide tray again so that the slide exits the projector and another slide goes into the slot. Reverse the slide projector to return to the first slide. Turn on the bulb of the slide projector. Advance the slide tray one slide at a time and watch the slides as they advance through the slide projector.

Tips & Warnings

  • Make sure the work surface has a strong light so it is easy to see into the slot where the slide goes into the projector for display.Always advance the slide tray one slide at a time and don't be in a hurry to advance to the next slide. This will help to keep the slides from jamming in the projector.
  • The halogen bulb of a slide projector is extremely hot and should never be touched by a bare hand. Always let the bulb cool down before touching it or its casing.