Imac share monitor problem

My wife has an iMac G3-266, tray loading Fruit model with a bad monitor (flyback transformer problem). I have a multiple scan 15av display I was using on my G3 233 beige desktop computer that I have hooked up the imac and it works just fine in this mode. I don't use my G3 much anymore because I also have an iMac G5 that I use most of the time but when I want to use my G3 for something, it is a real pain to switch the monitor cable from the iMac to the G3 and back again. A while back I had bought some 15 pin monitor cables and a manual data switch box so I could just switch from one to the other but if I try to use that setup the monitor setting go bad. The colors are off, the screen is blurry and no matter how you try to adjust it won't work. If I disconnect the setup and try to hook back up the imac, it takes several reboots before the monitor goes back to normal settings. It is a real mess. Any ideas why this is not working? From what I have read on the internet, I should be able to share the monitor but obviously I cannot. Thanks for the help.
Dave

The switch box is probably not passing all signals.
Does this monitor use a VGA connector? Do you have an Apple video to VGA adapter on the iMac's internal video port, like this one?
[Apple video to VGA adapter|http://cgi.ebay.com/New-Switchable-Apple-Mac-to-VGA-Video-Adapter-TVCS- 183_W0QQitemZ360087077864QQihZ023QQcategoryZ3762QQssPageNameZWDVWQQrdZ1QQcmdZVie wItem]
If so, you should get a separate VGA display for the two computers. If the monitor supports it, the video on a tray-loader can be set as high as 1600x1200. I got a 21-inch CRT at a computer surplus store for around $100, and that was about 3 years ago. They were giving away VGA 15-inch displays.

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http://support.apple.com/kb/HT2278
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Dear Mr Brown,
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I guess it's possible you've got some kind of hardware problem.... but not likley given it started with you installed your OS.
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http://discussions.apple.com/thread.jspa?threadID=196774&tstart=0
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This will 'reset' FCP X.
Download Digital Rebellion's Preference Manager (free, simple to use, and perfectly safe, both to download and use).
http://www.digitalrebellion.com/prefman/
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Doesn't fix every problem, but it fixes a lot.
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The monitor is available but it says that I have 0 batches even dough I'm processing a project.
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Sure :
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Joy joy hallelujah.
Pardon the sarcasm...I just wasted 3 hours of my life trying to sort the issue out.
Heard a KWORLD PlusTV PCTOTV Converter SA235 USB 2.0 Interface would sort the issue out for under 40$ but it's not Mac.
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~r

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http://www.freenas.org/
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http://support.apple.com/kb/HT3924
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