I'm having a problem with the connection between my laptop and my projector. The image appears for a split second through the projector but then the signal disappears.

You tried three notebooks, but did they have the same video adapters? Try a notebook with a different video adapter. i would say your video adapter isn't good enough to put out a dual display. you might need to get a laptop with a better video card

I have a possible solution however it may not be THE solution your after, you'll probably be able to tell very quickly if it isn't, this will only apply if you are using either a component video signal or a PC/laptop signal to send to the projector.

If you are using a laptop or desktop to hook up your projector, I would try first of all double checking that it's correctly plugged in, and if you still have no luck try a different cable.
It's likely to be the cable because when the signal goes down the cable it's split into 5 different signals. 3 of these are the colour information for Red, Green and Blue. Depending on what you mean by 'image is blue', it could mean that your either not getting the information for Red, or your not getting the information for Red AND Green. If you want to test this, open up microsoft paint while connected to the projector and create 3 boxes, then fill 1 completely red, 1 completely green and one completely blue. If you are missing the information to any of these colours then that colour will appear black on the projector screen.

In component video the signal is split down 3 cables (rather than 5) and 2 are colours (rather than 3)... Red and Blue. Check that the cable running red (Usually labelled Pr on the DVD and projector) is completely plugged in (some of these are really tight, but it's important that it goes all the way) and also that you have plugged into the correct slot, for instance that you have plugged into Pr and not the right Audio channel, both of which are coloured red.

If you are still not having any luck then I would suggest using a computer monitor or a television (depending on what type of signal your sending it) to test the projector. Plug it in instead of the projector and if it works then the issue lies with the projector and I have at least narrowed it down for you.

Hope this has been helpful.

dear friend for this you have to configure you display settings
right click on desktop and click on properties now click on settings and see for the setting you have mentioned select the second display adapter appear in the dialouge box and save it and close the dialouge box. now you can see your contents on your projector vote me if it helped gagan

Hello,
You have to use a serial port HDMI cable to do the connection,
Also check if your laptop is compatible with the projector, if the laptop is compatible you have to try a new cable Good luck in solving the problem........

Connect your projector to your laptop using a VGA cable. Now turn ON your projector and your laptop.

To make your screen projected, look at your function keys (F1 to F12). Look for the icon which looks like a laptop LCD and a TV. It should appear like LCD icon/TV icon. In some model it is in F4 while F3 in Lenovo. Example, you found the icon in F4, just press and hold down the FN key and press F4 to send your desktop image to the projector. This combination is called the "dual monitor" setup which in your case, the second monitor is a digital projector.

Try holding down the Function key (Fn), then pressing F5. Wait a few seconds. On most laptop, each press of the F5 key will toggle between laptop display only, projector only and Dual (same image on both - my favorite).

You'll probably see a little Monitor-shaped icon on the F5 key. It's possible it's another function key - on Dells it's usually F8.

I have found that vertical lines that suddenly appear from projectors are due to poorly connected cables. Sut off your projector and wait for the fan to go off. Then unplug the connectors from the computer to the projector and secure them again, making sure to go all the way. Hope this helps.

Try changing the refresh rate on your graphics drivers to 60 or 70 hz on both your laptop screen and the projector. Do this at the desired resolutions as well.

connect the projector to your laptop and restart the computer in that way it would recognize the presence of your projector... ;)

From my experiences working with projectors, more than likely you will need to replace the lamp