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  1. #1
    Mar Pro (2013 TrashCan) Unknown HW problem
    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

  2. #2
    Mar Pro (2013 TrashCan) Unknown HW problem
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    4,544
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    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.
    Jake

  3. #3
    Mar Pro (2013 TrashCan) Unknown HW problem
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    39,814
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    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
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  4. #4
    Quote Originally Posted by pigoo3 View Post
    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?

  5. #5
    Mar Pro (2013 TrashCan) Unknown HW problem
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    24,920
    Your Mac's Specs
    iMac, i7 4GHz, 32GB memory, 1TB Blade, OS X.14 Mojave,
    Trust you used Apple compatible modules as Macs are very fussy about memory. See this link about specs:-


    https://eshop.macsales.com/item/OWC/1866D3R9M64/
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  6. #6
    Quote Originally Posted by harryb2448 View Post
    Trust you used Apple compatible modules as Macs are very fussy about memory. See this link about specs:-


    https://eshop.macsales.com/item/OWC/1866D3R9M64/
    Hello Harry.

    Yes - I bought 4 modules that came off Mac Pro. 100% compatible.

  7. #7
    Mar Pro (2013 TrashCan) Unknown HW problem
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, USA
    Posts
    4,929
    Your Mac's Specs
    L2014 Mac mini macOS 10.14, iPhone 8+ iOS 12, 12.9" iPad Pro 1 iOS 12, Pencil 1
    Quote Originally Posted by nauzers View Post
    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?
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  8. #8
    Quote Originally Posted by ferrarr View Post
    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

  9. #9
    Mar Pro (2013 TrashCan) Unknown HW problem
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    39,814
    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Quote Originally Posted by nauzers View Post
    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).

    Quote Originally Posted by nauzers View Post
    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
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

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