Hello, I have recently received a Mac Pro 5,1 2.4gb 8-core model, and upon testing, it sometimes starts up, then shut off after 10-20 minutes. Most of the time however it doesn't power up at all. When plugging it in a red LED at front lights for a second and pressing the diagnostic button lights up the "Standby" amber light. I have tried replacing the power supply, swapping GPUs, SMC reset, etc. and it still does the same thing. What's going on here?
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MP 1,1-5,1 Mac Pro 5,1 power issue
- Thread starter NickArchiver52
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The behaviour you described is usually caused by a common CPU tray problem. Did you inspected the CPU tray northbridge heatsink push-pins?
clip (snap rivet) for Northbridge heat-sink on 2009 Mac Pro 2X2.26
Just my 46 cents, here. I have just finished completely refurbishing 2 Mac Pro (5,1 - 2010-2012) CPU trays (and am about to do a third) and have had to deal with this problem. In both cases, the original plastic rivets and springs were intact but, after reading numerous reports of failure over...
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Normal behaviour for the LEDs. CPU tray red LED always lit for second when powering up.
Your best bet is to test the CPU tray with a known working Mac Pro, test the known working Mac Pro CPU tray with yours.
Anyone have schematic for the heat sink and cpu tray? area and what is Delta? i dont even know how to get to these parts in the case so any guidance would be appreciated.The behaviour you described is usually caused by a common CPU tray problem. Did you inspected the CPU tray northbridge heatsink push-pins?
clip (snap rivet) for Northbridge heat-sink on 2009 Mac Pro 2X2.26
Just my 46 cents, here. I have just finished completely refurbishing 2 Mac Pro (5,1 - 2010-2012) CPU trays (and am about to do a third) and have had to deal with this problem. In both cases, the original plastic rivets and springs were intact but, after reading numerous reports of failure over...
Normal behaviour for the LEDs. CPU tray red LED always lit for second when powering up.
Your best bet is to test the CPU tray with a known working Mac Pro, test the known working Mac Pro CPU tray with yours.
I have no issue with working on my mac pro 5 ,1 mid 2012 however i have not gone this far into the machine ever so any help in layman terms would be helpful esp with applying thermal paste ie: where exactly, amount? How to apply? Or if i should take it to a repair place?
I was about to buy a new power supply and new Ram ...