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Apple Computing Products:
macOS - Desktop Hardware
2006 mac pro (A1186) 2.66GHz - only one diagnostic led on: LED 1 (trickle power)
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<blockquote data-quote="mpinho" data-source="post: 1739811" data-attributes="member: 385782"><p>Hello,</p><p></p><p>This is my first post, so I'd like to start by thanking all the advices I could find.</p><p></p><p>So... I bought a 2006 Mac Pro last week and it does not boot.</p><p></p><p>Symptom: "Power-on LED illuminates when power button is pressed and fans spin continuously but there is no boot tone or video".</p><p></p><p>Yesterday, I found one tip for troubleshooting: measurement of the Optical Drive "Molex" power connector.</p><p></p><p>According to the tip, measurements should be 12V and 5V.</p><p></p><p>But I have 12V (12.6) and 26.6V. This second value is really concerning me.</p><p></p><p>I'd guess that the PSU is damaged. What do you think?</p><p></p><p>And with a value so high, should I expect everything along the board to be fried?</p><p></p><p>Thank you so much in advance,</p><p></p><p>mpinho</p></blockquote><p></p>
[QUOTE="mpinho, post: 1739811, member: 385782"] Hello, This is my first post, so I'd like to start by thanking all the advices I could find. So... I bought a 2006 Mac Pro last week and it does not boot. Symptom: "Power-on LED illuminates when power button is pressed and fans spin continuously but there is no boot tone or video". Yesterday, I found one tip for troubleshooting: measurement of the Optical Drive "Molex" power connector. According to the tip, measurements should be 12V and 5V. But I have 12V (12.6) and 26.6V. This second value is really concerning me. I'd guess that the PSU is damaged. What do you think? And with a value so high, should I expect everything along the board to be fried? Thank you so much in advance, mpinho [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
2006 mac pro (A1186) 2.66GHz - only one diagnostic led on: LED 1 (trickle power)
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