I had a Performa 6100 that did the exact same thing, and only after hitting
the Cmd-Option-Power button a few times and doing the Cmd-Opt-P-R keys a few
times I was able to get it to boot. Seems like these older machines have a
hard time waking up with a dying PRAM battery.

At 3.6V though, yours almost seems (IIRC) not dead, but almost full power.

On Mon, Jul 13, 2009 at 12:33 PM, jon <[email protected]> wrote:

>
> I have a IIsi that wouldn't power on.  I replaced the power supply,
> and now it will turn on, but won't boot.  Power comes on, hard drive
> spins up, monitor turns on, but there's no boot sound from the speaker
> and I can tell from the hard drive that it's not booting.
>
> Can this be the PRAM battery?  I replaced it about 5 years ago, so
> it's not the original.  I check the voltage, and it's reading about
> 3.6 volts, but maybe it's not supplying enough power.
>
> Will the IIsi boot if the PRAM battery is dead? Anything else I can
> check?
>
> Thanks.
>
> >
>

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