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TICKET ARCHIVE -> Ti G4 400 Doa

Dublin - May 12, 2005 - 9:44 pm

I recently acquired a G4 400 on a trade for an ailing G3. On the first couple startups there was chime, screen with a few vertical lines, and some drive activity. I hooked up to an external suspecting either inverter problems or logic board. I was able to boot-up and saw that the laptop did work. Suddenly the machine went into sleep mode and the power connection went from green to orange. All further tries to startup failed to work, and no more chime. The power connector remains orange, suggestions?

bobw - May 13, 2005 - 6:26 am

Hi John

Take the main battery out and see if it will start on the AC adapter.

If not, I would replace the Backup battery. What you describe is usually caused by this battery going dead.




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Bobw - MacOSX.com Tech Support

Dublin - May 13, 2005 - 2:38 pm

Thanks for the quick reply on the battery , I never ran one down that far so the orange light was a surprise, But I still have all the other problems. No longer chimes (may be turned down), vertical lines in a one inch bar (multiple colors), when attached to an external monitor everything works fine. Am I looking at a replacing display? The hinges, cables, and screen are all intact with no visible signs of wear. What would cause the vertical lines or bar? inverter?

bobw - May 13, 2005 - 2:48 pm

John

Could be the inverter board, display module or a cable, but since you have no chime, I would try the backup battery first.


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Bobw - MacOSX.com Tech Support

Dublin - May 13, 2005 - 4:31 pm

i've already installed the new battery from my other Titanium, still no chime. Is there any quick way to test those parts.

bobw - May 14, 2005 - 7:18 am

John

The way Apple tests the inverter board is to replace it. An Apple service center may have a way of testing the logic board and screen.
There is also a PMU board which could be bad causing this.



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Bobw - MacOSX.com Tech Support

Dublin - May 14, 2005 - 8:25 am

Thanks Bob. According to most of my colleges experiences with apple authorized repairs, they repair things like the the local neighborhood auto shop. Just keep replacing items until you find the problem and pass the bill along to the customer.

Dublin - May 14, 2005 - 8:26 am

Thanks Bob. According to most of my colleges experiences with apple authorized repairs, they repair things like the the local neighborhood auto shop. Just keep replacing items until you find the problem and pass the bill along to the customer.

bobw - May 14, 2005 - 8:57 am

John

Apple has a good rep for repairs. They may replace a board to see if that's the problem, but won't leave it in there if it's not. You would only be charged for the necessary repairs, if it's Aple dong the repairs.

I know a lot of computer repair shops are rip offs. Do you have an Apple store near? Or you could call Apple to send it to them for service.


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Bobw - MacOSX.com Tech Support

Dublin - May 14, 2005 - 9:41 am

Yes we have an Apple store just a few hundred miles away, I may do that instead of an authorized repair shop. Too bad there isn't an easy way to test the components, although I may just call first for an estimate. If it's higher than the components ($295.00 for all) I have a line on I may just buy them. Then again it would be a buyer beware purchase, since they are said to be pulled from a working machine.