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Joined: 2009 Oct 10
Mac LC Just Crashed, No More Startup Sound.

Ok, so I left my Macintosh LC running for about an hour, and when I came back to it, all I got was a frozen Afterdark screen. I restarted it, and got no startup bong or video. Anyone know what's wrong?

- Justin

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Vitoarc's picture
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Joined: 2010 Aug 15

Did you try restarting with extensions off? Or booting from a floppy?

If it's not the software, it could either be an overheated CPU or the power supply has gone bad.

[Edit] Do you hear/feel both the cooling fan and the power supply fans working?

MikeTomTom's picture
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Joined: 2009 Dec 7

Is that an LC I, II, or III? or some other LC family? Anyway do check the internal clock battery voltage. If it is under 3 volts (should be 3.6 v) then this would prevent an LC (I, II & III) from booting. It would appear dead, no start up chime etc. Hopefully thats all it is, as its an easy fix.

Vitoarc's picture
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Joined: 2010 Aug 15

Ah yes, the battery. Forgot about that... I'm prone to think the worst on older Macs. Wink