PowerMac G5 2.5Ghz Quad Problems

Discussion in 'PowerPC Macs' started by TrinCrew10, Feb 2, 2011.

  1. TrinCrew10 macrumors newbie

    Feb 2, 2011
    So the other day my G5 Quad started just running the cooling fans on high on start up and not displaying anything. I shut it off and left it off for a few days and turned it back on again today. It did the same thing, it was connected to my TV so I checked to see whether my MacBook would display on the TV and it does. The red light also comes on at start up and shut down. Is this just a video card failure or a bigger problem?
    Thanks for any input
  2. TrinCrew10 thread starter macrumors newbie

    Feb 2, 2011
    additionally the machine cannot be put to sleep with the power button located on the front
  3. TrinCrew10 thread starter macrumors newbie

    Feb 2, 2011
    Update: I reset the SMU and the machine works fine. Is this a sign that the logic board is going? Should I still get the machine checked out?
  4. TrinCrew10 thread starter macrumors newbie

    Feb 2, 2011
    now im pissed off again because it is not recognizing the airport card that I know is in there...
  5. Hrududu macrumors 68020


    Jul 25, 2008
    Central US
    Still have your Apple Hardware Test disc? I would run it if you still have it. Also, consider taking it in to an authorized service provider for tests. Also never hurts to open it up and use an air compressor to blow out dust that has collected in there.
  6. skinniezinho macrumors 65816

    Jan 1, 2009
    try to run the AHT that came with it..if nothing shoes,take it to an Apple Authorized Service Provider .
  7. chrfr macrumors 604

    Jul 11, 2009
  8. MacHamster68, Feb 3, 2011
    Last edited: Feb 3, 2011

    MacHamster68 macrumors 68040


    Sep 17, 2009
    +1 check the cooling system for leaks first in G5 LCS models , check wherever possible inside ,underneath and behind the processors , this liquid is corrosive enough to dissolve the logicboard and all parts on it or powersupply and even the case over time
  9. franklinZappa macrumors newbie

    Feb 3, 2011
    I would say it is about 90% a logic board problem.

    The other percentage of it could be third party hardware that you have installed.
  10. VanneDC macrumors 6502a


    Jun 5, 2010
    Dubai, UAE

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