MP 1,1-5,1 Mac Pro - Loud PSU

[Simon4#]

Hi All,

This is my second thread for this issue but I think it is necessary as I have isolated the issue to my PSU and not the other fans.

I have a dozen A1289 with the following specs:
Xeon 5645 (2)
28 GB Ram
1 TB HD

Half the units have a very loud PSU
swapping the processor tray with a non problematic tower fixes the issue. Has anyone experienced this before? How can I fix this? Thanks.



5.1
1.39f11

 

[flyingmanatee]

Years ago my 3,1 developed a fan reving issue. I ended up having to use Macs Fan Control to manually create curves for the temperatures. I've been doing this for 5 years and the unit is still here.