Three Blinking Flashes and incompatible RAM warning - PowerMac G5

Discussion in 'PowerPC Macs' started by, Sep 12, 2013.

  1. macrumors newbie

    Jun 18, 2012
    Hello people. I am trying to repair a PowerMac G5 with the following specs:

    I replaced the hard drive with no problems but i receive three blinking flashes on the front LED which means that the RAM is incompatible. Strangely enough the RAM modules are the ones preinstalled. I tried different modules but in most situations it doesn't boot.

    Any suggestions? Could it be the memory banks? Is there a way to bypass the first slots and try seconds and thirds?

  2. rabidz7 macrumors 65816


    Jun 24, 2012
  3. Zotaccian macrumors 6502a


    Apr 25, 2012
    I remember reading that 2004 models suffered from high motherboard failure rate and because you say you are trying to fix it I guess it was originally given away or sold for parts because of some serious problems.

    Try different slots ( or try getting new pair to test. If it is a solder failure on the motherboard then repairing becames very difficult.

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