Newly aquired G5 DP 2ghz with 2gb ram running Leopard, which I updated
to 10.5.8. Air cooled NOT water. Mostly running quite nicely.

Internal speaker not working thus NO chime or sounds. The headphones
work fine.

The Sound Preferences output tab lists the build-in-audio (Internal
speakers) under choose a device for sound output, and lists optical
digital-out port (Digital Out). No device is connected to the optical
audio port, and selecting it brings up "the selected device has no
output controls." If Digital Out is selected Output volume control is
greyed out.

If Internal speakers is selected the Output volume control is NOT
greyed out, appears to work but has no effect. Internal speaker
selection also states "the selected device has no output controls."

I have reset the nvram via open firmware, but made no difference.

An internet search reveals problems with the optical audio port mostly
refer to portable macs. Solutions range from jamming the headphone
plug in repeatedly to twisting and turning toothpicks, matchsticks or
plastic forks into the headphone port at a particular angle. I surmise
that on the portables there is an optical audio switch inside the
headphone jack which gets stuck in the on position?

On my machine there is red light lit in the port from boot to
shutdown. Here's a photo of what the port looks like:
http://support.apple.com/kb/TA27095?viewlocale=en_US

Pushing the tiny door back on the port does not reveal a switch of any
kind, and I don't want to go poking around in there without more
information.The connector cable is I think a toslink optical; I don't
have one, so it's off to the electronic store. Perhaps, just plugging
unplugging the cable will have some effect, if my machine suffers from
a stuck on switch. Who knows?

I have NOT reset the PMU. A PMU reset always seems a drastic/risky
measure to me, but maybe no more risky than prodding and poking the
optical audio port itself.

Is there a particular kext or bundle that controls the optical audio
port, which i could remove/mv or disable? It has to be controlled by
some kext, which one?

Answers and alternative suggestions appreciated. Thanks.

jfMac

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