Why does my Mac Pro 4,1 shutdown automatically?
After doing some analysis, i think i know why it's shutting down, i'm just not sure how to fix it.
I suspected my system was overheating, so I installed software that listed temperatures of all the components. Ambient temperature was 80 degrees Fahrenheit, while most components themselves hovered a little above 100-120 degrees Fahrenheit range, EXCEPT my Power Supply - it was at 219 degrees Fahrenheit.
I installed fan control software to get fan readings/settings of fans. The PSU fan was 0 rpms! All other fans were around 800-1000 rpms. When i tried to manually set rpms on PSU fan, the software error-ed, and said it couldn't control this fan.
So do i have a bad fan? I've tried unplugging all cords, to reset pram, and fan still malfunctions. I searched the internet for mac pro fan, but i'm only finding fans that will fit the CPU locations. I have a ma pro 4,1 (early 2009). Any advice?
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