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how do you hook up one mac to another mac to check the screen because my intel macs screen does not come on it only makes the ding sound but thats it on on the other the screen works can someone help please.
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Use a Firewire cable and connect them. Start the one up that you are having issues with holding down the "T" key. Start the other machine up normally. The hard drive icon should appear on your desktop and you can then run Disk Utilities on it.
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How does this verify the screen on the one having issues?
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Can't be done. Connect to an external monitor from the funky Mac. If you see nothing you have Video Card or Logic board problems. If you see your normal desktop the problem is somewhere in the internal display chain. You can check the Diagnostic LEDs on the funky Mac to see if the video processor is communicating with the display... but you'll have to strip the components out of the machines to test them.
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BTW Kenneth you've asked the same Question twice... please delete the other one.
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