13 Replies Latest reply: Dec 20, 2012 8:48 AM by MarthaT
MarthaT Level 1 Level 1 (0 points)

This morning I had some ominous occurrences with my Mac Book Pro.  When I got it out, the battery was quite warm, even though I had turned it off last night before connecting it to the charger.  (It's never warm when it's not using the battery.)  Then, when I pushed the power button, nothing happened until after several pushes.  Eventually it did start up and seems to be working OK, but I'm worried, could this be a sign of a problem?  I lost a hard drive a few years and don't want to repeat that trauma.  Any ideas?  Thanks!


MacBook Pro
  • 1. Re: Problem looming with MacBook Pro Late 2008?
    Courcoul Level 6 Level 6 (11,470 points)

    At the very least, I'd run an Apple Hardware Test and see if it picks something up. Try resetting the SMC too, as power seems to be involved in the issue.

     

    http://support.apple.com/kb/HT1509

    http://support.apple.com/kb/HT3964

  • 2. Re: Problem looming with MacBook Pro Late 2008?
    thomas_r. Level 7 Level 7 (27,925 points)

    I would not expect the battery to be warm after charging overnight while the machine was powered down, though. Even if the battery was absolutely empty when you plugged it in, it should have completed a charge well before you got up this morning (unless it was a very short night's sleep) and had a chance to cool off from any heating that might have occurred during the charging process. So it probably wouldn't be a bad idea to get it checked out by Apple.

     

    Is this an original battery? If not, how old is it?

     

    One precaution you should definitely take, just in case there is some kind of hardware issue, is to be sure you are backing up your computer frequently.

  • 3. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    It is an original battery.  And yes, I am religious about backups after my previously mentioned disaster.  Thanks, I will try your suggestions and report back.

  • 4. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    Thanks, will try your suggestions.

  • 5. Re: Problem looming with MacBook Pro Late 2008?
    thomas_r. Level 7 Level 7 (27,925 points)

    It is an original battery.

     

    That may be part of the problem, then. 4 years is an awfully long time in terms of laptop battery lifetime.

     

    Try this: open System Profiler (or System Information if you are running Mac OS X 10.7 or later), found in /Applications/Utilities. Under Hardware in the left-hand list, select Power. What does the battery information show?

  • 6. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    Here is the battery info:

    Battery Information:

     

      Model Information:

      Serial Number:          6N8470F0Q13E

      Manufacturer:          SMP

      Device name:          bq20z951

      Pack Lot Code:          0000

      PCB Lot Code:          0000

      Firmware Version:          002a

      Hardware Revision:          000a

      Cell Revision:          0100

      Charge Information:

      Charge remaining (mAh):          3976

      Fully charged:          Yes

      Charging:          No

      Full charge capacity (mAh):          4041

      Health Information:

      Cycle count:          436

      Condition:          Normal

      Battery Installed:          Yes

      Amperage (mA):          0

      Voltage (mV):          12449

     

    System Power Settings:

     

      AC Power:

      System Sleep Timer (Minutes):          10

      Disk Sleep Timer (Minutes):          10

      Display Sleep Timer (Minutes):          10

      Automatic Restart On Power Loss:          No

      Wake On AC Change:          No

      Wake On Clamshell Open:          Yes

      Wake On LAN:          No

      Current Power Source:          Yes

      Display Sleep Uses Dim:          Yes

      GPUSwitch:          2

      Battery Power:

      System Sleep Timer (Minutes):          15

      Disk Sleep Timer (Minutes):          10

      Display Sleep Timer (Minutes):          2

      Wake On AC Change:          No

      Wake On Clamshell Open:          Yes

      Display Sleep Uses Dim:          Yes

      GPUSwitch:          2

      Reduce Brightness:          Yes

     

    Hardware Configuration:

     

      UPS Installed:          No

     

    AC Charger Information:

     

      Connected:          Yes

      ID:          0x0100

      Wattage (W):          85

      Revision:          0x0000

      Family:          0x00ba

      Serial Number:          0x007279e9

      Charging:          No

  • 7. Re: Problem looming with MacBook Pro Late 2008?
    thomas_r. Level 7 Level 7 (27,925 points)

    That's not a terribly high cycle count, and the condition reports as "normal," so there's not an obvious problem with the battery.

  • 8. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    OK, I reset the SMC.  With all this stuff, the power button seems to be working fine.  Also ran Techtool, repaired permissions and did a backup.  Everything worked fine.

    Tried to run AHT but it didn't come on using the D key restart. 

    Have not yet had a chance to dig out my original install disk, which is where I believe it is for my Powerbook Pro late 2008.

  • 9. Re: Problem looming with MacBook Pro Late 2008?
    Courcoul Level 6 Level 6 (11,470 points)

    Odd. Did you change the internal drive sometime within the Mac's lifetime?

     

    Since the Early 2008 models, the AHT has been residing in a hidden corner of the hard drive; I recall having a bet with my local AASP who insisted that the DVD was needed and lost when I ran the AHT without optical media on my now-dead Early 2008 MBP. If you changed drives or did a low-level format, you would of course lose the AHT copy and would have to resort to DVD 1.

     

    Just to cover all bases, since yours has a removable battery, have you taken it out and verified it is not swelling?

  • 10. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    OK, I installed/reinstalled the apps that came with my install disk and found AHT upon restart.  Did a test and it found no problem. Have not checked the battery yet.  If it were swelling, would it still be able to operate normally? If my battery is on borrowed time, would I be wise to just replace it. or would that be a waste of $$$?

  • 11. Re: Problem looming with MacBook Pro Late 2008?
    thomas_r. Level 7 Level 7 (27,925 points)

    Well, as I said, there's not an obvious problem with the battery, but as old as it is plus with the heat issue you saw, it's probably wise to get it checked out by Apple anyway. Otherwise, if it's not giving you any trouble, shows no signs of swelling and still lasts reasonably well when you use the machine unplugged, I wouldn't bother replacing it just yet. Keep an eye on it, though.

  • 12. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    Thanks much for your help!

  • 13. Re: Problem looming with MacBook Pro Late 2008?
    MarthaT Level 1 Level 1 (0 points)

    OK here's an update.  Took Mac to the Apple Store and had them run diagnostics.  No problem found.  They erased the HD and did a clean reinstall of the OS.  And my back worked fine!  So I'm back in business and happy.