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Powerbook G4 17" 1.5Ghz no sound from internal speakers
- Thread starter vddrnnr
- Start date
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There is a micro switch in the headphone jack that can get stuck. Back when I had an Ibook I fixed it with a toothpick. I don’t remember the details though. May be your issue.
There's a little metal clamp/switch deeply within the audio socket that might be bent by an inappropriate 3.5 audio-plug. When it is constantly in "switch-off internal-speakers while headphones are plugged-in"-position, the internal speakers are silent.
If restoring the original operating-system from the scratch (on a separate partition for testing) doesn't do any help, you might inspect the audio-socket to find out, if there's something damaged (I was happy to have an otoscope for that purpose, when my intel-iMac suffered from the red-light of (audio-)death due to a same reason of a bent contact within the socket). It might be also only a bunch of dust within the socket ...
Hi bjar and bobesch,
The system recognizes when headphones are not connected so I
think from that part it's ok.
I've tried 2 different audio boards and two sets of speakers
and still no sound when internal speakers are active.
But sound is working when I connect the headphones.
Best regards,
voidRunner
The system recognizes when headphones are not connected so I
think from that part it's ok.
I've tried 2 different audio boards and two sets of speakers
and still no sound when internal speakers are active.
But sound is working when I connect the headphones.
Best regards,
voidRunner
Do you get ANY sound from the internal speakers?
If you open the Sound pref pane, then plug in headphones, does the output change to "headphones"?
Then, unplug the headphones. Does the output change back to internal speakers?
If it does not change back, keep going with finding a stuck switch inside the headphone jack.
Do you a boot chime when you boot or restart?
Do you hear any boot chime when you do a PRAM reset? (Restart while holding Option-command-p-r --- keep holding the same 4 keys until you get 2 boot chimes, then release the keys. If there is no boot chime, just hold the 4 keys during restart, for about 60 seconds, then release
No sound at all, keep looking at hardware. If the headphone switch doesn't appear to be bad (hard to tell just by looking), then you should also check inside that the speakers are attached to the logic board connections. BOTH speakers connect to a single connector on the sound board.
If you open the Sound pref pane, then plug in headphones, does the output change to "headphones"?
Then, unplug the headphones. Does the output change back to internal speakers?
If it does not change back, keep going with finding a stuck switch inside the headphone jack.
Do you a boot chime when you boot or restart?
Do you hear any boot chime when you do a PRAM reset? (Restart while holding Option-command-p-r --- keep holding the same 4 keys until you get 2 boot chimes, then release the keys. If there is no boot chime, just hold the 4 keys during restart, for about 60 seconds, then release
No sound at all, keep looking at hardware. If the headphone switch doesn't appear to be bad (hard to tell just by looking), then you should also check inside that the speakers are attached to the logic board connections. BOTH speakers connect to a single connector on the sound board.
Hi all,
I think I found the problem.
I went looking in the service manual for the PB 17" and it mentions
that the flex sound cable of the 1.5ghz is different ( not sure what exactly as it fits without problems
and the sound board is recognized ).
I'm using one from an 1.33ghz which says 1.33ghz only instead of 1.33 or higher.
Does anyone know where I can find one of these?
Best regards,
voidRunner
I think I found the problem.
I went looking in the service manual for the PB 17" and it mentions
that the flex sound cable of the 1.5ghz is different ( not sure what exactly as it fits without problems
and the sound board is recognized ).
I'm using one from an 1.33ghz which says 1.33ghz only instead of 1.33 or higher.
Does anyone know where I can find one of these?
Best regards,
voidRunner
If you look at the service manual again, you will see that the 1.33 and the 1.5 GHz use the same cable.
The manual states that cables marked with either 1.33 or greater will work, except in a 1.67 model. THAT one must be labeled 1.67 or greater. That does not say that ANY flex cables are marked with the words "or greater" - only that the cable must be marked 1.33 or greater.
So, you should interpret that to mean that ANY sound board flex cable for the 17-inch PB, marked 1.33 GHz or greater will work in your 1.5 GHz 17-inch PB.
And, you can search for the part number 922-6065 (from the Views page for the 1.5 GHz model)
And, if you can't find one of those, the 1.67 will work, too. Part number for that is 922-6756
(The only limitation that you might have with cable choice, is if YOU have a 1.67 GHz PowerBook, which requires the correct cable. Your 1.5 GHz will take either cable
)
The manual states that cables marked with either 1.33 or greater will work, except in a 1.67 model. THAT one must be labeled 1.67 or greater. That does not say that ANY flex cables are marked with the words "or greater" - only that the cable must be marked 1.33 or greater.
So, you should interpret that to mean that ANY sound board flex cable for the 17-inch PB, marked 1.33 GHz or greater will work in your 1.5 GHz 17-inch PB.
And, you can search for the part number 922-6065 (from the Views page for the 1.5 GHz model)
And, if you can't find one of those, the 1.67 will work, too. Part number for that is 922-6756
(The only limitation that you might have with cable choice, is if YOU have a 1.67 GHz PowerBook, which requires the correct cable. Your 1.5 GHz will take either cable
)
Hi DeltaMac,
In my PB 1.33ghz the cables do say 1.33ghz only.
And in the 1.5ghz they say 1.33ghz or 1.5ghz.
The problem is the 1.5ghz I got does not have the flex cable for the sound board so I used the
one from the 1.33ghz as a replacement.
Best regards,
voidRunner
In my PB 1.33ghz the cables do say 1.33ghz only.
And in the 1.5ghz they say 1.33ghz or 1.5ghz.
The problem is the 1.5ghz I got does not have the flex cable for the sound board so I used the
one from the 1.33ghz as a replacement.
Best regards,
voidRunner
And, as you have discovered, that is a cable that should work.
What were the results with the other tests?
Watching the Sound pane connection when plugging, then unplugging headphones...
Do you get ANY chimes when you try a PRAM reset? (review post # 5 above for the steps)
Finally, the left and right speakers connect to the sound board through a single connector, so you might want to inspect the wires in that cable, looking for breaks or tears in the insulation, and that the connectors appear undamaged.
Maybe the previous owner removed the flex cable, because the speakers were not working at all, or they only used external speakers.
What were the results with the other tests?
Watching the Sound pane connection when plugging, then unplugging headphones...
Do you get ANY chimes when you try a PRAM reset? (review post # 5 above for the steps)
Finally, the left and right speakers connect to the sound board through a single connector, so you might want to inspect the wires in that cable, looking for breaks or tears in the insulation, and that the connectors appear undamaged.
Maybe the previous owner removed the flex cable, because the speakers were not working at all, or they only used external speakers.