Connecting with projector

Hello! I hope someone can help me with the problem..
I am trying to connect my IMAC G5 with a video projector.
I have been doing this for years with i book G4, using video adaptor,
and it has always worked.
This time, however, when I connect the projector with my IMAC,
(the 17 inch) the resolution changes to 1024-640, thus the image on the screen
get "swollen"..
Even if I try to change the resolution in the system preference panel,
(Display window), it just doesn't work out; if I change it to 1670 resolution
as it should be, the image becomes "smaller" with a black frame around it.
(In this case, the swollen image gets slim as before.)
I had doubt that the video adaptor is not the right one.
(According to the guy in the computer shop in Turin, it is Mini-VGA
and it should work out OK likewise with Imac G5)
I tried with a computer adaptor, too, that came with Ibook, but it is the same.
The Mac technical assistance says that there is something wrong with my IMAC and I should take it to the repair.
Is it really only the solution? or is there something else that I can try?
Thank you grazie..
minobu

Hi, did you get this solved. We also you ProPresenter. I am not sure why you mirrored the screen to get a DVD to play? PP supports DVD playback (unless your using an older version that doesnt have this feature??). Or you can drag the DVD window to the projector display.
Did you deselect mirror image? because you wont have any arrangement options available, you wouldn’t need them.

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http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/8duj15us.exe
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Here are the actors in our play today
1. MacBookPro A. (my system a CD2 2.16 with OSX 10.4.9)
2. MacBookPro B. (my friends system a CD2 2.16 with OSX 10.4.9)
3. an iBook (my friends 1.07 GHz G4 with 10.4.8 and a VGA adapter)
4. DELL 2300 MP projector
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VGA Display
Now, I unplug the DVI to VGA adapter and naturally MBP B readjusts to it's native resolution. Great.
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Scene 2: The FREAKY thing!
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Now, logically I try again to immediately unplug the adapter from the iBook and switch adapters and plug back into MacBookPro B-it worked once right? But, sorry, NOT twice. The mystery deepens.
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Let's get crazy and immediately plug the adapter into the MacBookPro B...it works-oh so logical...NOT! Why wasn't it corrupted this time by MBP A? MacBookPro B readjusts its screen to 800X600 stretched and projector immediately recognizes and projects desktop.
Now lets see if I can break it again as before. I unplug it from MacBookPro B and back into MacBook Pro B, knowing that this caused it to stop working previously. And...it still works-WHAT? I do it a third time. It still works on MacBookPro B.
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I unplug DVI to VGA adapter and plug back in to MBP A and 'Boom' the projector is recognized again...no it couldn't be!
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Now switching over to MBP A- DOESN'T WORK.
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Message has been edited: notebook name has been added to title

Originally Posted by Jeffrey
What notebook are you talking about?
…and what operating system is preinstalled on this notebook?
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Connecting with projector

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