2007 Mac Pro (G87142HSUPZ) won't turn on

Discussion in 'Mac Pro' started by robbieY, Apr 7, 2014.

  1. robbieY macrumors newbie

    Joined:
    Apr 7, 2014
    #1
    Hello everyone,
    My Mac from 2007 does not chime when I hit the power button, it just beats like a slow heartbeat as if it's on sleep mode. The monitor does not turn on.
    The fan inside starts and stops, continuously, matching the slow beating of the power button's light.
    Any ideas of what might be wrong? Luckily, all of my 4 hard drives have been backed up and I've been looking to buy the next version of the Mac Mini.
    I think this is a hardware issue, one that would probably not be worth replacing.

    Any thoughts?
     
  2. NOTNlCE macrumors 6502a

    NOTNlCE

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    Oct 11, 2013
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    DMV Area
    #2
    Had this issue with a 1,1 I purchased last week, in my situation, it was the video card dying. What card is in your Mac Pro? The NVIDIA 7300 GT was the cause of this problem for me.
    -N
     
  3. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #3
    ATI RADEON HD 4870 512MB-ZML.

    This wasn't the original graphics card either. I installed this in 2010 to replace the original one.
     
  4. NOTNlCE macrumors 6502a

    NOTNlCE

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    #4
    Try removing the video card and see if it will give you the chime without it installed, also check your RAM risers for light indicators for RAM issues. Re-seat as much as you can, and give the tower a good blow out with compressed air.
     
  5. robbieY thread starter macrumors newbie

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    Apr 7, 2014
  6. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #6
    So I removed all of the RAM bays and put them back on. I removed the video card and blew out the dust. I even removed all the internal drives (4) and put them back in.

    When I turned on the computer with the video card unplugged, the computer did not chime.

    The 2 fans in my Mac Pro are spinning, and so is the fan on the video card.

    I noticed there was a round, flat battery on the motherboard, It's a Panasonic CR2032 +3V. Maybe that went out?
     
  7. flowrider macrumors 601

    flowrider

    Joined:
    Nov 23, 2012
    #7
    ^^^^The battery would cause some erratic behavior and forgetfulness if it was spent. It would not prevent starting up.

    Lou
     
  8. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #8
    Dang, I think it's probably my video card. There's no way I'm going to replace that, not for such an old Mac that can't run the latest Mavericks OS.
    Now I just wish Apple would release a newer Mac Mini.

    Thanks for all of the input everyone!
     
  9. NOTNlCE, Apr 8, 2014
    Last edited: Apr 8, 2014

    NOTNlCE macrumors 6502a

    NOTNlCE

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    #9
    Might be worth the replacement, honestly. With the new Tiamo boot.efi hack, the 1,1 and 2,1 Mac Pros can run Mavericks, all they need is an upgraded video card, and hey, hey, look what you have the opportunity to do?

    Only the "official Apple" video cards are expensive, for example, the Radeon 2600 XT runs $100+ on Ebay, but an NVIDIA GeForce 610 GT offers BETTER performance for about half the price, and will function just the same, though will not have a boot screen.
     
  10. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #10
    I see, I'm not familiar with using hacks like that. I'd have to fully diagnose my Mac Pro to conclude it's the video card in the first place.

    But it's nice to know that option exists!
     
  11. flatfoot macrumors 65816

    Joined:
    Aug 11, 2009
    #11
    You reported earlier that you cleaned the video card. Have you tried turning your Mac on without the video card installed, as NOTNICE suggested?

    If it boots without the card installed, the card is most probably dying/dead.
     
  12. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #12
    Yes, I tried that, the computer did NOT turn on when I removed the video card.
     
  13. flatfoot macrumors 65816

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    Aug 11, 2009
    #13
    So it's probably not the video card that's causing the issue.

    I'd try different combinations of your RAM modules (as has been proposed by others) to find out whether there's a faulty one among them.

    ----------

    Might well be a RAM issue:

    https://discussions.apple.com/message/19981991#19981991
     
  14. robbieY thread starter macrumors newbie

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    #14
    I see, I'll try that later today when I get home. Thanks!
     
  15. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #15
    I removed all the RAM, cleaned out the dust, left 2 of the 6 Crucial RAM pieces out and it works! I just contacted Crucial Tech for replacements.

    Thank you everybody for your excellent help!
     
  16. OS6-OSX macrumors 6502a

    OS6-OSX

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    Location:
    California
    #16
    Hopefully when you said "cleaned out the dust", it was not only from the ram slots in the risers. I do this (pictured) 1x a year. Keeps the ole 08 in tune!:D
     

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  17. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #17
    Wow, that looks very clean. How do you do that?
     
  18. jakesaunders27 macrumors 6502a

    jakesaunders27

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    Jan 23, 2012
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    United Kingdom
    #18
    I also do the same with my 1,1 I just take out the ram risers, Optical Drive tray, hard drives & graphics card and give them all a blow over with compressed air, they are all easy to remove. I've never cleaned my PSU like OS6-OSX does but suppose I should for a 6 year old machine! So yeah just use compressed air.
     
  19. robbieY thread starter macrumors newbie

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    Apr 7, 2014
    #19
    Cool, cool, time to buy more canned air. Thanks for the tips!
     

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