Help! Problem using Mini-DVI adapter

I'm a teacher, and I need some help.
I've been using a Mitsubishi XD 250 data projector at school. The setup I have is exactly the same as it was last year, but something strange is happening.
The data projector uses VGA, so I have the VGA-to-Mini-DVI adapter from Apple.
I turned on the projector this morning, as I have a presentation for one of my classes today, but it's not working! The projector comes on, and the iMac shows that it recognizes the external display, but the projector says "No Signal." I have no idea what the problem is, as I've tried restarting both the iMac and the projector as well as connecting and disconnecting the cables.
Any suggestions? I suppose it's possible that something happened to the VGA cable over the summer, but is that likely considering that the iMac recognizes the external display?
I really need to give this presentation today, so any help would be greatly appreciated!

Dett;
It is probably simply the wrong signal source being set on your projector. This is normally a remote control switch or your projector. I don't know this model but they all have multiple input choices. Change the input until you see your Mac.
Hope this helps
Steppenwolf

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Hello and Welcome to Apple Discussions,
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Message was edited by: theocas

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Help! Problem using Mini-DVI adapter

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