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MacBook Pro - Booting Oddity
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TaliesinSoft
Aug 30, 2012, 10:27:59 PM8/30/12
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My MacBook Pro will boot just fine if the power brick is attached. If
the brick is unattached, even when the battery indicates a 100% charge,
it will normally not boot but will just make a hissing sound. Every
once in a while it does boot from the battery. I have tried replacing
the battery and this didn't help.
Any thoughts will be appreciated!
--
James Leo Ryan - Austin, Texas
the brick is unattached, even when the battery indicates a 100% charge,
it will normally not boot but will just make a hissing sound. Every
once in a while it does boot from the battery. I have tried replacing
the battery and this didn't help.
Any thoughts will be appreciated!
--
James Leo Ryan - Austin, Texas
Jolly Roger
Aug 31, 2012, 11:03:34 AM8/31/12
to
In article <aaalpf...@mid.individual.net>,
A hissing sound? Very interesting! I'd love to hear an audio recording!
Sounds like a PMU/SMC problem. You might try resetting the PMU/SMC to
see if that fixes the issue.
--
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JR
Sounds like a PMU/SMC problem. You might try resetting the PMU/SMC to
see if that fixes the issue.
--
Send responses to the relevant news group rather than email to me.
E-mail sent to this address may be devoured by my very hungry SPAM
filter. Due to Google's refusal to prevent spammers from posting
messages through their servers, I often ignore posts from Google
Groups. Use a real news client if you want me to see your posts.
JR
Your Name
Aug 31, 2012, 6:05:04 PM8/31/12
to
In article <jollyroger-F269F...@news.individual.net>, Jolly
inside the laptop may help, but they could be loose inside the casing.
We have an old MacBook that just about works which hisses when the loose
power socket (the non-MagSafe type) isn't connecting properly - the socket
needs to be re-soldered onto the small circuit board.
Roger <jolly...@pobox.com> wrote:
> In article <aaalpf...@mid.individual.net>,
> TaliesinSoft <talies...@me.com> wrote:
> >
> > My MacBook Pro will boot just fine if the power brick is attached. If
> > the brick is unattached, even when the battery indicates a 100% charge,
> > it will normally not boot but will just make a hissing sound. Every
> > once in a while it does boot from the battery. I have tried replacing
> > the battery and this didn't help.
> >
> > Any thoughts will be appreciated!
>
> A hissing sound? Very interesting! I'd love to hear an audio recording!
>
> Sounds like a PMU/SMC problem. You might try resetting the PMU/SMC to
> see if that fixes the issue.
It could be a connection issue with the battery. Cleaning the connectors
> In article <aaalpf...@mid.individual.net>,
> TaliesinSoft <talies...@me.com> wrote:
> >
> > My MacBook Pro will boot just fine if the power brick is attached. If
> > the brick is unattached, even when the battery indicates a 100% charge,
> > it will normally not boot but will just make a hissing sound. Every
> > once in a while it does boot from the battery. I have tried replacing
> > the battery and this didn't help.
> >
> > Any thoughts will be appreciated!
>
> A hissing sound? Very interesting! I'd love to hear an audio recording!
>
> Sounds like a PMU/SMC problem. You might try resetting the PMU/SMC to
> see if that fixes the issue.
inside the laptop may help, but they could be loose inside the casing.
We have an old MacBook that just about works which hisses when the loose
power socket (the non-MagSafe type) isn't connecting properly - the socket
needs to be re-soldered onto the small circuit board.
Your Name
Aug 31, 2012, 7:57:18 PM8/31/12
to
In article <YourName-010...@203-118-187-140.dsl.dyn.ihug.co.nz>,
And to prove the point, the MacBook has just decided to commit suicide.
Because the socket is loose (and the battery useless), to maintain power
you often have to jiggle the power plug ... which resulted in the plastic
around the cable wearing, and just now it started smoking and had to be
unplugged from the wall.
Moral: Do not muck about with power from the wall or battery - get it
fixed or replaced.
Because the socket is loose (and the battery useless), to maintain power
you often have to jiggle the power plug ... which resulted in the plastic
around the cable wearing, and just now it started smoking and had to be
unplugged from the wall.
Moral: Do not muck about with power from the wall or battery - get it
fixed or replaced.
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