powerbook no sound

Calum2

macrumors member
Original poster
Jan 4, 2017
40
13
Having a minor problem with my powerbook 17" 1.5ghz considering how cheap it was. There is no sound at all through the computers speakers, the jacks work perfectly though. When doing the thermal paste I had a look around inside and everything related to audio is visibly in working order.

Any ideas? thanks
 

Traace

macrumors regular
Jul 21, 2018
139
123
Germany
First of all idk if your powerbook has digital audio support. Mine from 2005 has, so I guess this one too.

1. Remove your headphones from jack.

2. Take a look into OSX Sound System Settings, does it shows Internal Speaker, just Digital-Output or nothing?
3. If it says only digital output, check the output jack, hold a white paper or something in front of it, does it have a red light on?
 

Calum2

macrumors member
Original poster
Jan 4, 2017
40
13
First of all idk if your powerbook has digital audio support. Mine from 2005 has, so I guess this one too.

1. Remove your headphones from jack.

2. Take a look into OSX Sound System Settings, does it shows Internal Speaker, just Digital-Output or nothing?
3. If it says only digital output, check the output jack, hold a white paper or something in front of it, does it have a red light on?
for the sound in system it says: Internal speakers> built in audio
I do not see a red light from the headphone jack
in the midi settings everything looks normal to me

edit: just realised you didnt mean headphone jack, I dont have one of the other ports that you mean
 

Traace

macrumors regular
Jul 21, 2018
139
123
Germany
edit: just realised you didnt mean headphone jack, I dont have one of the other ports that you mean
I mean the headphone jack :) , some powerbooks use them as a multi-port for analog(electrical) but also digital audio(optical). Their circuit switch chip is known to be fauly.
However it seems as your powerbook 17" 1.5ghz doesn't support digital audio its not affected anyway.



Must be something different. Try a clean install first. Then test the speakers alone with a low input signal. Also check if the connector to the mainboard is still fine.

If its all fine, I would mesure mainboard audio lanes from connector to its chip. Then mesure all parts involved.
 

Calum2

macrumors member
Original poster
Jan 4, 2017
40
13
I mean the headphone jack :) , some powerbooks use them as a multi-port for analog(electrical) but also digital audio(optical). Their circuit switch chip is known to be fauly.
However it seems as your powerbook 17" 1.5ghz doesn't support digital audio its not affected anyway.



Must be something different. Try a clean install first. Then test the speakers alone with a low input signal. Also check if the connector to the mainboard is still fine.

If its all fine, I would mesure mainboard audio lanes from connector to its chip. Then mesure all parts involved.
Thanks ill go and measure all the points, test the speakers on something else etc, it came with a fresh install when I got it so I dont think that that is related
 
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Calum2

macrumors member
Original poster
Jan 4, 2017
40
13
Have you reset PRAM? Used software update to make sure you're on 10.4.11 or 10.5.8?
Yes ive reset pram aswell as the other one, I just updated everything via software update but no change sadly