Mac Pro 1.1 Ram Riser problem

Discussion in 'Mac Pro' started by Gilbert_LM, Dec 19, 2015.

  1. Gilbert_LM macrumors newbie

    Joined:
    Dec 19, 2015
    #1
    First Post Here !

    I have a Mac Pro 1.1 updated to 2.1 with 2 X5365 running yosemite (10.10.2)
    I have 4 RAM modules. It runs just fine when I have all the sticks on the first riser.
    If I split 2 sticks riser A two sticks riser B -> Flashing light
    4 sticks riser B -> Flashing light

    I tried changing the sticks from one riser to the other -> same results

    my guess -> Bad Logic Board

    As there are knowledgeable people here, What should I do to either fix or confirm my problem ?

    Happy Xmas to all !
     
  2. golip macrumors newbie

    Joined:
    Dec 19, 2015
    #2
    Hi

    I would try reseting the SMC and PRAM if that doesn't solve it then review the connections from riser board to logicboard could be some dust or rubbish blocking a clean connection.

    My mac pro has a similar issue , these machines are very picky about ram and sometimes require matched pairs so that could also be an issue.

    If all fails then i guess its either logicboard or faulty ram riser.

    thanks
     
  3. Gilbert_LM thread starter macrumors newbie

    Joined:
    Dec 19, 2015
    #3
    SMC & PRAM & Dollar Store can of compressed air did the trick

    Cheers mate !
     
  4. golip macrumors newbie

    Joined:
    Dec 19, 2015
    #4
    Your welcome buddy
     

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