Power icon issues after sleep? (macbook)

7 replies [Last post]
Offline
Joined: Sep 16 2004
Posts: 274

So I've had my macbook (2.4 core2duo, 10.5.2) for a few weeks now, lately if it has been closed while on battery power and then woken up the power icon in the menu bar flashes. It jumps between the power plug icon (for when its plugged in) and the battery icon. It seems to be randomly timed and theres nothing near the magsafe port. Any ideas? It stops flashing if plugged in or restarted.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
cwsmith's picture
Offline
Joined: Oct 13 2005
Posts: 699
Try resetting the power management unit (PMU)

• Disconnect the Magsafe adapter
• Remove the battery
• Press and hold the power button for 10 seconds
• Put everything back together & restart

Watch the machine for a couple days and report back

__________________

Dozens of Macs; a handful of PCs; Apple ][e, ][c and ][gs; a few iPods; lots of parts
17 guitars, 2 baritone guitars, alto guitar, 6 bass guitars, bajo sexto, 3 ukuleles, mandolin, banjo, sitar
3/4 scale upright bass, 4pc drum kit, congas, travel congas, bongos, cajon, cabasa, 12 harmonicas
http://www.cwsmith.fmhttp://www.facebook.com/cwsmith2620

Offline
Joined: Sep 16 2004
Posts: 274
Thanks, just what I needed.

Thanks, just what I needed.

Offline
Joined: Sep 16 2004
Posts: 274
Turns out it's still doing th

Turns out it's still doing this after resetting the pmu multiple times. It doesn't really affect anything except for knowing how much battery life I have left, but it is quite odd.

Also, updated to 10.5.4 and it's still doing it. Any ideas?

cwsmith's picture
Offline
Joined: Oct 13 2005
Posts: 699
Macbook power chain

There are a few possible points of failure here. From the wall to the battery, you have:

• Power cord or duckhead adapter
• Power adapter with Magsafe cable
• Magsafe board
• Logic board
• Battery cable
• Battery

The power cord (or duckhead), power adapter, and battery are easy enough to swap out from another MacBook (one at a time, of course) to determine which, if any, of these parts is to blame. Any friends, family, coworkers you could borrow from for an hour or so? Is there a school, college or university nearby that might be willing to help?

The Magsafe board, battery cable and (heaven forbid) logic board can only be swapped out by an Apple or Apple-authorized technician without voiding your warranty. But if this machine is as new as it sounds, you should have plenty of warranty left if one of these parts has failed. Try the things you can, then contact Apple to get the machine looked at.

__________________

Dozens of Macs; a handful of PCs; Apple ][e, ][c and ][gs; a few iPods; lots of parts
17 guitars, 2 baritone guitars, alto guitar, 6 bass guitars, bajo sexto, 3 ukuleles, mandolin, banjo, sitar
3/4 scale upright bass, 4pc drum kit, congas, travel congas, bongos, cajon, cabasa, 12 harmonicas
http://www.cwsmith.fmhttp://www.facebook.com/cwsmith2620

Offline
Joined: Sep 16 2004
Posts: 274
I'm thinking that the only ha

I'm thinking that the only hardware it could be is the magsafe board as it only does this when it is running off battery. I'll bring it into apple before I start opening it up, its starting to remind me of my wallstreet powerboard issues! Is there anything else that can be reset? I haven't really gotten to know the intel macs as well as I knew the g3-g5 era machines, so let me know if theres a common sense trick that I might be missing here.

cwsmith's picture
Offline
Joined: Oct 13 2005
Posts: 699
Re: I'm thinking that the only ha

hackintoshg4 wrote:

I'm thinking that the only hardware it could be is the magsafe board as it only does this when it is running off battery.

It still could also be the battery cable (poor connection? short circuit?), the logic board (bad power management?), the battery (smart circuitry bad?), or the power adapter (maybe not supplying proper amperage or voltage to the machine?). There are too many variables. If you have a way to try a different power adapter and/or battery, at least you could *eliminate* these as possible culprits.

hackintoshg4 wrote:

I'll bring it into apple before I start opening it up,

You're under warranty. *DO NOT OPEN IT UP.*

hackintoshg4 wrote:

its starting to remind me of my wallstreet powerboard issues! Is there anything else that can be reset? I haven't really gotten to know the intel macs as well as I knew the g3-g5 era machines, so let me know if theres a common sense trick that I might be missing here.

Nothing more to reset that you haven't already tried. Try swapping in some user-changeable parts (power adapter, battery) to see if the behavior changes. Failing that, you have an internal component problem that only Apple or a certified tech can fix.

__________________

Dozens of Macs; a handful of PCs; Apple ][e, ][c and ][gs; a few iPods; lots of parts
17 guitars, 2 baritone guitars, alto guitar, 6 bass guitars, bajo sexto, 3 ukuleles, mandolin, banjo, sitar
3/4 scale upright bass, 4pc drum kit, congas, travel congas, bongos, cajon, cabasa, 12 harmonicas
http://www.cwsmith.fmhttp://www.facebook.com/cwsmith2620

Offline
Joined: Sep 16 2004
Posts: 274
Just a little more info incas

Just a little more info incase anyone has ideas. I can't be without it currently, so no sending it in yet. I've also been getting odd color bars across the screen similar to when my ibook 700 logic board failed, so not looking to good right now.