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MAC Pro switches off intermittently

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Steve RogersMAC Pro switches off intermittently
by on Jun 4, 2010 at 2:16:07 am

Hello,

Could someone please explain why my MAC Pro (which I've had for a couple of years now) switches off unexpectedly.

This appears to be a serious intermittent issue:
1. Switches off when attempting to boot up

but at times when it boots up fine it...

2. Switches off after 15 minutes

but at times when it last > 15 minutes it...

3. Switches off after 90 minutes

Again, could anyone please point me in the direction as to what I should do next?

I have taken it to Apple and they are even perplexed.

Thank you in advance.

Regards,
Steve


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Zane BarkerRe: MAC Pro switches off intermittently
by on Jun 5, 2010 at 3:58:37 am

"could anyone please point me in the direction as to what I should do next?"

Make an appointment at the Apple Store.



Hindsight is always 1080p



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Craig AlanRe: MAC Pro switches off intermittently
by on Jun 6, 2010 at 3:43:08 pm

Is it possible it's a wake from sleep issue? Check your settings in system preferences>energy savings. If it’s set to sleep in 15 min. and then is having trouble waking that would explain it. On the other hand, it might be a power supply or some component that when it heats up will power off. Check to see if all fans are working. The not completing boot up could be bad ram or a corrupt OS or a hardware issue.

Try booting from an external drive and see if problem is fixed.

Remove any 3rd party devices plugged into Pro and see if problem is fixed.

Remove extra ram chips and go back to original ram. See if problem is fixed.

Repair permissions. Repair disk. Reset p-ram.
See if problem is fixed.

Run hardware check app that came with Mac Pro.

Reinstall OS and see if problem is fixed.


OSX 10.5.7; MAC Book PRO (EARLY 2008); Camcorders: Sony Z7U, Canon HV30, Sony vx2000/PD170, Canon xl2; Pana, Sony, and Canon consumer cams; FCP certified; write professionally for a variety of media; teach video production in L.A.


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