G5 intermittent blank screen on boot up

Discussion in 'PowerPC Macs' started by themariner, Oct 26, 2008.

  1. macrumors newbie

    Joined:
    Oct 26, 2008
    #1
    I have a G5 that has started intermittently booting up with a totally blank screen - not blue, no video at all. Sometimes on reboot or after resetting the PRAM it works again...

    Any suggestions?
    Many thanks

    TheMariner
     
  2. macrumors 68040

    velocityg4

    Joined:
    Dec 19, 2004
    Location:
    Georgia
    #2
    Have you tried other monitors?
    Does it boot all the way even with a blank screen? You can try turning on file sharing when you get a working screen then wait the normal boot time to access your G5 over a network with another computer.

    It could just be a failing video card. Do you have the hardware diagnostics CD? When you do get video on boot you can try running tests with that.

    Beyond that the only other way I can see testing the video card is getting a cheap replacement off ebay and trying that out, get a PCI one for testing it should be cheaper than any AGP for G5's. It would certainly be cheaper than a technician.
     
  3. thread starter macrumors newbie

    Joined:
    Oct 26, 2008
    #3
    Thanks

    Many thanks - I will try these and see what happens.
     

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