No speakers working, but headphones do.

@biker1bob - I'm confused? You altered the output within OS-X preferences and the output did go out through the speakers and you had no problems until you restarted your system and then it stopped. If that's the case then your PRAM setting is being lost. Check your battery and the battery connector.

No.. what I am saying is in preferences you can see it is showing either speakers or headphones.. which means the mechanical part of the jack is working.. never is any sound heard when on speakers

@biker1bob - Different versions of OS's react differently! I wouldn't assume the preference view of the speakers would mean anything. A toner tool which injects a signal which a speaker can respond to might be a better way to see where things sit. It you applied the toner at the speaker do you hear the speaker responding? Use a schematics and boardview to locate the speaker connections from the exposed logic board.

If you don't then the speaker its self is bad. Replacing the speakers a a bit of a chore as you need to take the uppercase off to get to them! iBook G4 14" 1.42 GHz Upper Case Replacement

Machine is already apart. And speakers themselves have been tested.. work fine. I have no schematic for the g4 iBook. Do you?

@biker1bob - Sorry I don't have this iBook schematic or boardview (Board ID 820-1606). The few I had fixed all had issues within the headphone jack.