G4 startup and big fan problems

Discussion in 'PowerPC Macs' started by jtimageg, Nov 21, 2010.

  1. macrumors newbie

    Mar 29, 2008
    I have a G4MDD that has start up issues.
    When I push the start up button, nothing happens. If I pull the power plug then reconnect it, the computer will start using the start up button on the front, but I noticed the start up chime is different (like older G4's) and the big fan doesn't start. Also icons in the dock don't bounce. If I then restart using the apple menu, the normal chime comes on, icons react normally, but the big fan still doesn't work.
    Just had the big fan replaced so I wondering if I have bigger issues lurking.
  2. macrumors 6502

    Dave H

    Mar 2, 2008
  3. macrumors 68000


    Oct 29, 2010
    The Philippines...
    I think PRAM batt lasts only around 5 years? MDD's are more than 5 years old, might be the PRAM batt.
  4. thread starter macrumors newbie

    Mar 29, 2008
  5. thread starter macrumors newbie

    Mar 29, 2008
    The repair tech said he replace the pram battery when he replace the fan. I replace the pram battery as per your recommendation and now at least it starts so thanks Dave H and Nameci for that.

    Still think I have a fan problem, tho.
  6. macrumors 6502

    Jul 23, 2010
    If you have a multimeter, test DC Volts on the motherboard fan connector.

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