How does overhead projector works?? - Califone International Office Equipment & Supplies

You can provide the model # for the projector or possibly look at the actual old bulb to obtain any identification data from the bulb - such as a part #.

Here is a link for 3m replacement lamps:
3M Canada Office 3M Overhead Projector Lamps

Move the projector away from the wall, the picture gets bigger. Then use the focus knob at the top to get a clear picture on the wall. Then use a camera to take a picture of the wall. Then upload the picture to the place you want to transfer it to.

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The button is probably worn out. You will need to get a new button for it.

Like many overhead projectors, the Buhl 2900 can accept TWO projector bulbs (the operating one plus a spare). Make sure you inserted your replacement bulb in the slot for the operating lamp. There is a slide lever on the front of the unit that allows you to quickly switch to the spare lamp. Turn off the projector and move the slider to switch to the other bulb slot. See if that does the trick. Good luck!

An overhead projector is a very basic but reliable form of projector. The overhead projector displays images onto a screen or wall. It consists of a large box containing cooling fan and an extremely bright light, with a long arm extended above it. At the end of the arm is a mirror that catches and redirects the light towards the screen.
An overhead projector can be used to enlarge images onto the screen or wall for audiences to view.

Hi Connecting a laptop computer to an overhead projector is a relatively simple process. That said, it can be a disaster to work hard on a presentation, be it for a school or workplace environment, only to show up and find yourself unprepared. Take the time now to learn about the different ways your laptop can connect to an overhead projector, and how to accomplish this easy task, and you can enter your presentation with poise and confidence.
Learn the different types of video outputs your laptop may or may not support. The three most common types of video outputs used with overhead projectors are Video Graphics Array (VGA), Separated Video (S-Video) and High Definition Multimedia Interface (HDMI). You need to make sure your laptop has the correct output corresponding to an input on the projector you will use.

projector goes on then goes out. orange light on solid and flashing blue.
have had optoma look at it they said it was bulb.

this is my 3rd brand new apollo 3000 that is not working! What is with this product? Fan works but no light

Check for corrosion where the bulb sits in. Is there a fuse required. Make sure you handle the buld with cotton gloves (oil from hands not good) Let me know if that works.