First and foremost, try replacing the clock battery. Yes, it's true. In machines of this era, when the clock battery fails the display may refuse to come up. It falsely appears that something more sinister is wrong with your computer. This particular problem has led to a large number of frustrated users, unnecessary monitor replacements, and computers tossed in landfills.

If you do replace the clock battery and continue to get the same problem, try swapping monitors (if you have one available). You may want to use a PC monitor plugged directly in to the VGA port, not the Mac video port, since a Mac-to-PC video adapter may have an incorrect or limiting setting.

If that doesn't work, then try a different video card. You might be able to find an older PCI card for Mac on OtherWorld Computing's website at http://www.macsales.com or possibly http://www.megamacs.com .


Hope this helps.



James






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Hi, I have a PTpro225, thats sitting dead in the water right now.
Can I try to hook up the PTP Box to my Mac Colorsync working monitor, and check to see if the video cards the problem, and not risk hurting the Colorsync 20" monitor?? in case the video card in the PTP is damaged? I get a startup chime on the ptp, and it sound like its starting up )but the dead screen is just a half size horizontal grey and nothing shows up on the desktop, so I cant tell if the PTPs actually working..
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