MAC PRO 5.1 ( Mid 2010 ) Needs heather to works

[misterkramp]

Hi there ,
I have a problem with my mac pro 2010.
He needs a heather to start and to avoid shutdown.
If there is no heather he stop working or i need to open Logic pro with a big project to keep him alive.
Any idea ?
I already have replaced the PSU.
THX

 

[Certificate of Excellence]

Hi there. What is a "Heather" ? I see you are working with a mac pro and a audio interface, unexpected shutdowns and you replaced the psu but am lost after that

 

[Amethyst1]

Hi there. What is a "Heather" ?

Probably a heater. I think the issue is that the Mac Pro works fine as long as warmed up (due to heavy load or external heat) but acts up/shuts off once it cools down.

 

[pmiles]

From what folks on the internet have been saying, it sounds like and expansion/contraction issue. Meaning when it gets cold it contracts and when it warms up it expands. So somewhere on your motherboard there is likely a cracked connection/trace that is being affected by the temperature.

 

[misterkramp]

It's a heater , sorry
i suspect a ram issue or the motherboard.

 

[Certificate of Excellence]

In that case I agree with post #3 & #4. Cold solder joints expanding when under load and warmed up making connection, then losing connectivity when cooled down.

 

[misterkramp]

And what about faulty ram ?

 

[Certificate of Excellence]

That’s a possibility. Take the machine down to a basic ram config and swap out dimms to see if that fixes anything.