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Power Mac G4 with OS 10.3.9: No startup tone

780 Views 8 Replies Latest reply: Jan 3, 2012 8:01 AM by Chuck Longest RSS
Chuck Longest Calculating status...
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Dec 27, 2011 7:29 AM

It is running, but there is no startup tone when it starts. It is also losing network connection pretty often. What does it mean when there is no start up tone... and how do I fix it? This model is referred to as Firewire 800.

PowerMac, Mac OS X (10.3.x)
  • Texas Mac Man Level 8 Level 8 (44,340 points)
    Currently Being Moderated
    Dec 27, 2011 9:01 AM (in response to Chuck Longest)


    To check if there's a hardware problem, suggest you run the Apple Hardware Test that's on your Install/Restore DVD that came with your Mac.


     Cheers, Tom

     G4 1.25HGz MDD, PB 12" G4 1.5GHz, Mac OS X (10.5.8), (10.4.11, 9.2.2) iPad2, iOS5 
  • Jeff Level 6 Level 6 (11,160 points)
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    Dec 27, 2011 9:13 AM (in response to Chuck Longest)

    Have you tried connecting a headset or external speaker to the audio out jack on the rear?  If you hear the startup tone when either is connected, the shunt in the audio output jack may be broken.  The normally-closed shunt sends audio to the internal speaker when a headset/speaker mini-plug isn't inserted.  When a plug is inserted, the shunt opens and the internal speaker is silenced.

  • Jon Smith Level 4 Level 4 (1,355 points)
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    Dec 27, 2011 7:53 PM (in response to Chuck Longest)

    Missing start-up sounds are notoriously hard to diagnose and cure. I have several times introduced this symptom by making multiple changes or swapping components from different Macs all at once, and have often as not cured it accidentally without figuring out exactly what the problem was. It seems to be some small anomaly the Mac is sensitive to, without being a problem serious enough  to keep it from running. If you made any changes, you might try to retrace your steps, but don't expect instant success.


    Don't know that that's helpful, but it's been my experience - especially when updating or rebuilding Macs from "compatible" parts bins.



  • japamac Level 7 Level 7 (24,390 points)
    Currently Being Moderated
    Dec 28, 2011 5:12 AM (in response to Chuck Longest)

    Resetting the PRAM should bring the startup chime back.


    Loss of the chime and network issues may be related to an old PRAM battery that needs replaced.

    Like this:

  • Jon Smith Level 4 Level 4 (1,355 points)
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    Dec 30, 2011 5:41 PM (in response to Chuck Longest)

    I get a resounding startup tone through my old Apple Design speakers plugged into the headphone jack. Don't have any USB speakers to test with. It would be nice if you could find a pair of digital Apple Pro speakers (cute little eyeballs) to plug in and test with. And sometimes the jack connexion sticks, so that just the act of plugging and unplugging restores sound.


    Still have the feeling that something in the loading sequence is tripping over itself, and that's a part of Macs that is totally beyond me. I'm just an old shade tree mechanic at heart.


    Have you tried Applejack utility?


    Told you it wouldn't be easy.




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