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Apple Computing Products:
macOS - Desktop Hardware
Hard Drive Problems Mac Pro a1186, Help!
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<blockquote data-quote="pigoo3" data-source="post: 1620187" data-attributes="member: 56379"><p>I'm glad you mentioned this…since it reminds me of another thread that I was helping someone with probably within the last month. </p><p></p><p>It's possible that the power supply in this Mac Pro has gotten weaker over the years…and can't handle anything more than minimum power demands. Meaning no multiple hard drives, no multiple video cards, no other PCI cards…other than just a low power stock GT-7300 video card. </p><p></p><p>To me this explains why you were able to get the Mac Pro running initially…and after installing more video cards…the Mac Pro basically gave up…and shut down. </p><p></p><p>In theory…removing all but one video card…and removing all but one hard drive might reduce the power demand enough to get it to work again. But…maybe when multiple video cards (and maybe multiple hard drives) were installed…something may have failed completely in the power supply…and that's why the Mac Pro is not working properly now.</p><p></p><p>From your last post…it sounds like the Mac Pro is working partially…so maybe I'm misunderstanding things…or maybe this "weak power supply" is only affected certain things.</p><p></p><p>As far as voltages…I think that iStat provides readings of voltages. I'm not 100% sure if this includes the voltages you're looking for. Give it a try. I think that iStat has a free 14 day or 30 day demo period.</p><p></p><p><a href="http://bjango.com/mac/istatmenus/" target="_blank">http://bjango.com/mac/istatmenus/</a></p><p></p><p>HTH,</p><p></p><p>- Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1620187, member: 56379"] I'm glad you mentioned this…since it reminds me of another thread that I was helping someone with probably within the last month. It's possible that the power supply in this Mac Pro has gotten weaker over the years…and can't handle anything more than minimum power demands. Meaning no multiple hard drives, no multiple video cards, no other PCI cards…other than just a low power stock GT-7300 video card. To me this explains why you were able to get the Mac Pro running initially…and after installing more video cards…the Mac Pro basically gave up…and shut down. In theory…removing all but one video card…and removing all but one hard drive might reduce the power demand enough to get it to work again. But…maybe when multiple video cards (and maybe multiple hard drives) were installed…something may have failed completely in the power supply…and that's why the Mac Pro is not working properly now. From your last post…it sounds like the Mac Pro is working partially…so maybe I'm misunderstanding things…or maybe this "weak power supply" is only affected certain things. As far as voltages…I think that iStat provides readings of voltages. I'm not 100% sure if this includes the voltages you're looking for. Give it a try. I think that iStat has a free 14 day or 30 day demo period. [url]http://bjango.com/mac/istatmenus/[/url] HTH, - Nick [/QUOTE]
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Apple Computing Products:
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Hard Drive Problems Mac Pro a1186, Help!
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