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Hard drive stopping powermac MDD from turning on

325 Views 3 Replies Latest reply: May 16, 2012 2:04 AM by BDAqua RSS
fakiekid Calculating status...
Currently Being Moderated
May 15, 2012 4:54 PM

Hi guys, I have a dual 1.25gHz powermac G4 that has been serving me amazingly well for the last 5 years. Until yesterday. Turned the computer on, ran like normal, opened Safari then Poomf! Off!


When I press the power button it lights up but nothing kicks in. This made me think power supply or motherboard.


So luckily I have access to other G4's at college. Thinking it was the power supply I swapped it out. Pressed power, same problem... Nothing.


Replaced the power supply in replacement machine, swapped HD over to new machine. Booted up for 2-3 mins, boomf, off, same issue..


Frantically tried again, C Major tone.. Boomf, off.. Pressed and held and got 1 long beep. Which is apparently a RAM issue? Kept it held. Nothing.


Took HD out and replaced machines to original states. Even tried swapping the battery between them.  Borrowed G4 now won't stay on for longer than 10 mins. My old G4 still won't do anything with any drive in.


I've tried placing my original drive as a slave in the borrowed G4 and same problem, no power up. As soon as its disconnected up it roars.


Gonna try place my HD in an external chassis but any.. ANY help is appreciated.

Dual 1.25 G4 2GB Ram, Intel Macbook 2.0ghz 3GB Ram (Leopard), iPhone 16GB, Mac OS X (10.4.11)
  • BDAqua Level 10 Level 10 (114,790 points)
    Currently Being Moderated
    May 15, 2012 8:11 PM (in response to fakiekid)

    Borrowed G4 now won't stay on for longer than 10 mins.

    Sounds like maybe a heat issue, most likely the Thermal Paste between the CPU & Heatsink needs replacing on that one... unless with another drive it works flawlessly.


    External FW encloste sounds like a good test.


    Will either stay booted up from the Install Disc?


    Can you try with one RAM stick/slot at a time?

  • BDAqua Level 10 Level 10 (114,790 points)
    Currently Being Moderated
    May 16, 2012 2:04 AM (in response to fakiekid)

    USB would be fine for getting the data off.


    To start from Discs, hold c key or Option key at bootup.


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