4 Replies Latest reply: Jan 3, 2010 11:21 PM by louie
cpobrien55 Level 1 Level 1 (0 points)
I encountered the same battery issue as many people have posted in the last couple months (here's an example: http://discussions.apple.com/thread.jspa?threadID=2247796&tstart=0) where my battery has all the sudden stopped charging. I have chalked it up as a dead battery, and have been content just keeping my laptop plugged in.

I started my laptop this morning and have no audio/volume control now. Using the volume adjustment keys (F3, F4, F5), the icon pops up, but it is grayed out and shows a circle with a slash through it (I guess indicating I don't have control of volume?). When I go into System Preferences -> Sound, in each of the windows (Sound Effects, Output, Input) the "Mute" box at the bottom is checked, but grayed out and I am not able to uncheck it.

Could this be related to the battery issue? I wouldn't think so, but it's coincidental that the two issues have come up around the same time.

Thanks!

Powerbook G4, Mac OS X (10.5.6)
  • cpobrien55 Level 1 Level 1 (0 points)
    I should add, I also tried to play music in iTunes - songs won't even play. If I hit the play button, nothing happens. Watching the timeline, it's clear the song isn't playing (and clearly I can't hear anything). Not sure if this is related either.
  • louie Level 4 Level 4 (2,945 points)
    I would say there are no pat answers based on the scant information you provide, so no replies. Some more information might help, such as:
    -what CPU speed is your Powerbook G4?
    -How long have you been running without the battery?
    -Do you leave the dead battery in the computer?
    -what are the battery specs (use System Profiler (Apple/About This Mac/More info))?
    -Have you tried resetting the PRAM and PMU?
    http://support.apple.com/kb/HT1379
    http://support.apple.com/kb/HT1431
    -Can you try a known good battery?
    -When you look at the Sound preference output pane, what does it say the active output is (internal speakers?)
    -Is there a red light glowing in the headphone jack? (would only apply to the last generation)
  • cpobrien55 Level 1 Level 1 (0 points)
    -what CPU speed is your Powerbook G4?
    Processor: 1.67 GHz (I believe)


    -How long have you been running without the battery?
    The battery died Nov. 12th


    -Do you leave the dead battery in the computer?
    I do still have the dead battery in my computer. But I have run it without the battery in at times.


    -what are the battery specs (use System Profiler (Apple/About This Mac/More info))?
    Charge Information:
    Charge remaining (mAh): 0
    Charging: No
    Full charge capacity (mAh): 10000
    Health Information:
    Cycle count: 0
    Battery Installed: No
    Amperage (mA): 0
    Voltage (mV): 0


    -Have you tried resetting the PRAM and PMU?
    http://support.apple.com/kb/HT1379
    http://support.apple.com/kb/HT1431
    I reset the PMU with no luck, will try the PRAM later.


    -Can you try a known good battery?
    I don't have a known good battery


    -When you look at the Sound preference output pane, what does it say the active output is (internal speakers?)
    "No output devices found"


    -Is there a red light glowing in the headphone jack? (would only apply to the last generation)
    I don't see any light coming from the headphone jack
  • louie Level 4 Level 4 (2,945 points)
    Try the PRAM reset. Other things to try are to create a new account and login to that; and starting Garage Band and trying to play something (anything), which has been known to kick start the sound.
    Others have reported similar problems: http://discussions.apple.com/thread.jspa?messageID=8727091&#8727091

    Failing those, you may have to go to a Boston area Apple Store for help.