iMac won't boot - diagnostic help please

Discussion in 'iMac' started by merlyn412, May 27, 2014.

  1. merlyn412 macrumors member

    Jan 7, 2008
    north vancouver
    My mid-2007 24" iMac won't boot.

    I hit the power button to start it up, and hear the fan start, but no hard drive noise, no chime, nothing on the screen.

    I have tried all resets that i find on google (unplug, wait 15 seconds ect.. holding down keys). Nothing seems to work.

    I just had it into the apple store, where my genius ran through basically all of the same steps.

    He offered to take it in for a free diagnosis, but as soon as he took down the serial number, he said that he couldn't help. He called my baby 'vintage' and said they they don't diagnose or repair anything 'vintage'.

    It's like he just called my wife fat. I'm furious!!:cool:


    I'm pretty sure i've read that there are diagnostic lights on the logic board. Is there anyway for me to figure this out on my own?

    I'm assuming that if it was the hard drive that died, i would at least get a grey screen. So i'm thinking power supply?

    Any suggestions are appreciated :(
  2. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    If you hear the fan spin up, it is not likely the power supply. It sounds like the main logic board is bad. You are correct, if it was a bad drive you would at least get the grey startup screen. Even if we could be sure it was the logic board (I'm not), I suspect a new logic board would cost more than that whole thing is worth.

    Time for a new iMac maybe?

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