G5 No display.

Discussion in 'PowerPC Macs' started by Powelly, Feb 19, 2011.

  1. Powelly macrumors newbie

    Feb 19, 2011
    I started up my PowerPc G5 the other day, the led at the front flashes, everything seems to start up, but i get no display and the fans run high

    Things I have done.
    Reseated and cleaned the contacts of all the ram (8x256) and the graphics card.
    Reset the PRAM (little button under ram)
    Taken out CMOS battery and tested voltage, full voltages still.

    Help? What else can i do?
  2. walterwhite macrumors 6502


    Jan 22, 2011
    South Central PA
    did you check the capacitors? The ones on the Logic Board, lower center... if the are bulging (not flat) on the tops of any... they are bad.
  3. Powelly thread starter macrumors newbie

    Feb 19, 2011
    I meant to say i had reset the smu.
    I have not reset the PRAM, should i?
  4. Powelly thread starter macrumors newbie

    Feb 19, 2011
    Also i cant see any capacitors, but thats probably becuase they're behind the processors, that i cant take out...
  5. 666sheep macrumors 68040


    Dec 7, 2009
    Forget about caps as you have PowerMac not iMac G5.

    Flashing light mostly indicates memory problem. Try to leave only pair sticks and test if it will change anything. If not, test another pair/other slots.

    Fans are revving up right from the start or after some time?

    Which exactly PM G5 you have (CPU, model etc)? Is it liquid cooled?

    Provide more details, please.

Share This Page