Mar Pro (2013 TrashCan) Unknown HW problem

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Hello all.

I hope users with great knowledge about HW can help me with this issue.

I bought Mac Pro for my music studio to work with audio.

MY MAC:

Mac Pro "Quad Core" 3.7 (Late 2013) 3.7 GHz Q. Core Xeon E5-1620v2

Intro. October 22, 2013* Disc. April 4, 2017**
Order ME253LL/A Model A1481 (EMC 2630)
Family Late 2013 ID MacPro6,1
RAM 64 GB VRAM 2 GB
Storage 256 GB SSD Optical None*

I was having random crashes in Logic Pro - beachballing on screensaver wakeup etc.
I decided to test my rams with memtest86. Straight away i got many errors and without hesitation assumed they are bad and replaced them (as I was about to upgrade them anyway).
But the problems remain. System is not stable and every now and then I get crashes and freezes.

Now I test each ram seperately and the results are..

RAM 1 SLOT 1 TEST 10 3078 errors
RAM 1 SLOT 2 TEST 10 3078 errors
RAM 1 SLOT 3 TEST 10 3078 errors
RAM 1 SLOT 4 TEST 10 3078 errors

RAM 2 SLOT 1 TEST 10 3078 errors
the rest are being tested still...

I run on board diag "D" on startup - and it shows no issues found.

I contacted RAM supplier and they advised that all modules were tested and there is no way all 4 are bad. And most likely my CPU or CPU Riser Card is faulty. (seems to be common issue with these Macs)

Can anyone advice how can I figure out the faulty part to be able to replace it. Is there a way to test Riser Card? can CPU tests tell anything?

I will appreciate any support and will be responding to any suggestions / questions.

Regards,
nauzers
 
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About all I can suggest is that you take it to an Apple store for an appointment at the Genius Bar. They have extensive testing facilities to do analysis. I believe the testing is free, but repairs will cost you.
 

pigoo3

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If you had not already replaced the RAM...replacing the RAM is what I would have suggested. As Jake advised...might be best & more efficient to have Apple take a look at it. Hopefully you're not too terribly far from an Apple store.

Please let us know what is found.:)

Nick
 
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If you had not already replaced the RAM...replacing the RAM is what I would have suggested. As Jake advised...might be best & more efficient to have Apple take a look at it. Hopefully you're not too terribly far from an Apple store.

Please let us know what is found.:)

Nick

Hello.

That is the first thing I did when i found this problem. I had 16 GB OF RAM - and modules had errors. I upgraded to 32 GB and modules still have errors.

Well I guess Apple service will be my last resort. I have seen these videos where they charge 1200 USD to repair what turns out to be folded pin for monitor backlight. But well - It looks like there is not much else out there.

Do you say that Apple have their own secret tools to diagnose the machine?
 
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Hello Harry.

Yes - I bought 4 modules that came off Mac Pro. 100% compatible.
So, was the ram you purchased used? Also, just because the ram came off a Mac Pro, does not mean it is “compatible”. Can you return it?
 
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So, was the ram you purchased used? Also, just because the ram came off a Mac Pro, does not mean it is “compatible”. Can you return it?

This is what i bought:

Genuine Apple Hynix 32GB 4x8GB 1866MHz DDR3 PC3-14900 ECC Memory Mac Pro 2013
 

pigoo3

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Well I guess Apple service will be my last resort. I have seen these videos where they charge 1200 USD to repair what turns out to be folded pin for monitor backlight. But well - It looks like there is not much else out there.

Usually Apple will examine things at no cost. Then they present you with the results...and repair options (if necessary).

Do you say that Apple have their own secret tools to diagnose the machine?

Apple most definitely has better diagnostic tools than are available to the public.:)

- Nick
 

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