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Isolating video failure on 933 QS - 2009/07/28 21:28Video works sporadically during power-on cycle. About once every ten restarts I will get video, the other nine times no video at all.
I have tried two different AGP cards with same results - cards work in my other G4. I tried a different monitor as well - same result.
I suspect the AGP slot itself, but it is only a supposition and know of no way to validate that suspicion. Any thoughts/ideas?
The symptoms manifest themselves no matter if the machine is "cold", or has been running for some time.
I cannot run this system headless, so I somehow need to resolve this problem.
Thanks for your help.
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harryb
User
Posts: 533
Re:Isolating video failure on 933 QS - 2009/07/28 22:35Pop in your install DVD, reboot in target disk mode and run Apple Hardware Test from there. AHT does a check of the graphics.
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krowmagnum
User
Posts: 948
Re:Isolating video failure on 933 QS - 2009/07/29 14:54Try resetting NVRAM in open firmware:
Boot holding command/option/O/F keys until you get the prompt.
If you get an image type:
reset-nvram Press Return
reset-all Press Return
This will reset all of the PRAM and NVRAM settings to default.
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stewieno1
User
Posts: 115
Re:Isolating video failure on 933 QS - 2009/07/30 23:22Try the other suggestions first and if that doesn't work maybe look at borrowing or buying a PCI card and connecting the monitor to that. The AGP slot as you hint at may be toast. A 16mb PCI card would probably only cost $10. Just make sure to get a Mac compatible one like this.
Stewie
bkyle - link cleanup
Post edited by: bkyle, at: 2009/07/31 10:14
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