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  1. #1
    toneroc
    Guest
    serious problem???...mac will not turn on!!
    Hello,

    I'm hoping someone can help me with this. I have a G5 imac with a power pc processor. I recently had problems with it crashing all the time and found out that i needed a new logic board. i got it replaced (at a pretty penny) and i thought that was the end to all my troubles. I got my computer home, plugged it in and turned it on....it made an awful crackling noise (a bit like an old zx spectrum loading screen) and then beeped 3 times, the fan/drive stirred up and the power indicator light repeatedly flashed 3 times also. i unplugged, tried all the trouble shoot tricks with resetting pram etc...and it still will not turn on. Each time i get 3 beeps, the fan or drive starts up an dthe indicator flashes.

    does anyone know what this means?...does it spell doom for my computer. Apparently at the apple repair place they had tested it and it was working fine.

    any help would be appreciated

    tony

  2. #2


    Member Since
    Oct 27, 2005
    Posts
    4,702
    Quote Originally Posted by toneroc View Post
    Hello,

    I'm hoping someone can help me with this. I have a G5 imac with a power pc processor. I recently had problems with it crashing all the time and found out that i needed a new logic board. i got it replaced (at a pretty penny) and i thought that was the end to all my troubles. I got my computer home, plugged it in and turned it on....it made an awful crackling noise (a bit like an old zx spectrum loading screen) and then beeped 3 times, the fan/drive stirred up and the power indicator light repeatedly flashed 3 times also. i unplugged, tried all the trouble shoot tricks with resetting pram etc...and it still will not turn on. Each time i get 3 beeps, the fan or drive starts up an dthe indicator flashes.

    does anyone know what this means?...does it spell doom for my computer. Apparently at the apple repair place they had tested it and it was working fine.

    any help would be appreciated

    tony
    I haven't had an experience or read or heard of anyone having the horrible experience that you describe.

    What I do know is you need to get your iMac back the the AppleStore pronto and ask them what they think is going on with it.

    If you paid good money for the replacement LogicBoard and it did that then you need some answers fast and it's the people that fitted the board who are the ones to approach.

  3. #3

    theonegod's Avatar
    Member Since
    Nov 02, 2006
    Posts
    476
    Specs:
    24" 2.8ghz IMAC, MB Pro
    Sounds like they did not seat the memory in all the way when they put it back together and in shipping it came just loose enough to cause your system to not boot. Before taking it in I would open the memory slot and just be absolutly sure those chips are pushed in all they can go then try to turn it on again.

  4. #4
    toneroc
    Guest
    yeah...i just read somewhere that 3 beeps means something do with inadequate ram or something so i'll check that. If that doesn't work then i'll be onto the shop boys something crazy.

    cheers

  5. #5
    paulhobbs23
    Guest
    Ive got the same crackling noise on one of my imacs, and i've narrowed it down to the logic board, all the ram and hard drive etc work fine on my other imac. Did they replace the psu when they replaced the logic board?? May be a faulty psu blowing the boards?? happened all the time when i worked as a PC techie, don't know about macs though?

  6. #6

    theonegod's Avatar
    Member Since
    Nov 02, 2006
    Posts
    476
    Specs:
    24" 2.8ghz IMAC, MB Pro
    How did that end up working for you tone? Was it the memory? I had a similar issue when I upgraded the ram in my Imac and it turned out I just had to push those chips in alittle more then I thought I did.

  7. #7


    Member Since
    Jul 22, 2003
    Location
    Hamilton College
    Posts
    6,999
    Specs:
    20" iMac C2D 2.16ghz, 13" MacBook 2.0ghz, 60gb iPod vid, 1gb nano
    1 beep = No RAM installed/detected
    2 beeps = Incompatible RAM type installed (for example, EDO)
    3 beeps = No RAM banks passed memory testing
    4 beeps = Bad checksum for the remainder of the boot ROM
    5 beeps = Bad checksum for the ROM boot block
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