I actually have the TDP-S26, but looks similar

Check both input selections on your computer and your projector. They both need to be set on the same input to work. For example, if the computer is set at 1080 and the projector is set on 720, it wont work. They need to match. Good luck!

You may need to check the settings of your mac book that permits you to output the signal to an external display. Also you may need to purchase a display port adapter (VGA, HDMI or DVI) that is compatible with the input connector on the projector

you need to be sure the computer resolution is 1024 x 768 be sure the projector is set to rgb or vga input signal type.

Most projectors have an auto search function which can be switched off. You can then set the source to the specific input that you are using. Of the problem persists it may be the battery of the Elmo. (If it has one) Maybe it isn't strong enough to send the signal and maintain it.

Good luck.

Hello,

Instructions
Things You'll Need:
Laptop computer equipped with a VGA, S-Video or HDMI output.
Overhead projector with the applicable input.
VGA, S-Video or HDMI cable.
Software to ready your content for presentation at the correct screen resolution.
DVI-VGA adapter, if you are using a Mac.
Step 1
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.

Step 2
Weigh the strengths and weaknesses of each types of video input and output. VGA projectors are the most common type, indeed it is likely that any projector in current use will have a VGA input. However, VGA video offers the lowest resolution of the these three types. S-Video offers a higher resolution than VGA, but is prone to screen flicker, especially when you are connecting your laptop to a power supply while presenting, rather than running off the battery. HDMI offers the highest picture quality of the three, and supports audio data transfer as well. However, know that HDMI-equipped laptops and projectors are more expensive than those that utilize the other video transfer formats.

Step 3
Choose a video data transfer standard best suited to your price range and needs. VGA is always the safest bet, but if you are purchasing a new laptop computer, try to find one within your budget with an HDMI output as well, as it will provide the best quality and allow you to transmit audio without the use of extraneous equipment. S-Video inputs are found on nearly every LCD and Plasma television, meaning that if you are giving your presentation connected to a television rather than a projector, this is a viable option as well.

Step 4
Make sure you know how to tell your computer to recognize that you wish to use a projector as a secondary video output device. On Windows-based laptop computers, this usually involves pressing the "Function" (or "Fn") key, followed by one of the numbered "F" buttons along the top of your keyboard. In most cases there will be a graphic of what looks like a television screen on the correct "F" key (e.g. "F4"), but if you aren't sure consult the manual that came with your specific model.

Step 5
Connect your video cable of choice to your projector and your Windows laptop, turn the projector on, and press the correct function key. If you have a solid video card, pressing the same key combination a second time will allow you to view your laptop's screen both on the computer itself and as a projected image simultaneously.

Step 6
Connecting a laptop computer to an overhead projector can be a little trickier. You will need a special adapter to connect to a projector using VGA, as well as the standard VGA cable. This is called a DVI-VGA adapter, and is available both from Apple and other electronics vendors. Plug the adapter to the DVI port on your Macintosh laptop, then plug the VGA cable into the projector and the adapter. Turn on the projector, then press and hold the "F7" key on your Mac. You will be up and running in no time.

Step 7
Try a dry run of your presentation using your own laptop and the same projector you will be using, if possible. It pays to be prepared, and your audience will be able to tell if you are fumbling around for the right function keys on the day you present. Your confidence will help you start your presentation off with a bang, and it will show.

Hope this helps

Computers do not generally send an RGB signal, you should be connected via a VGA cable between the projector and the computer. The input menu on the projector should be set to VGA. The output of the computer should be equal or lower to the maximum resolution of the projector.

I have full sanyo schematics available at http://yama.co.za/forum/index.php?topic=146.0

Im sure you'll find what you are looking for there.
Enjoy

There is no input yet meaning, it is not yet properly connected to your computer. Check the cable connection. Please make sure that the computer or laptop is already turned on.

Hello Dear,

Pls Mention the Model of the Laptop which you are
using with.Pls also check

1. The display setting should not be more than XGA resolution
1024x768. Also try on 800x600 resolution

enjoy

Viren

um okay dumb electrician, try using a different vga cable on your projector. you might just have a bad vga cable.