How can you disable the internal speakers with a hardware solution?
My aluminium unibody 2008 Macbook has two audio issues. First of all, the internal speakers are damaged, they are very silent and start distorting a lot as soon as I turn the volume higher. Optical out and headphones still work like a charm. The Apple service said I got to change the logic board. No, thanks, not for this cost... :)
The second issue is the common one, that the audio jack frequently jumps back to "Internal speaker", disrupting the sound via headphones. As I cannot use the internal speakers at all, I would like to disable them by some tricky soldering on the logic board. I want to be able to switch between Optical-Out and Headphones-Out.
Does anyone know how to do this? I could not find a explanation for the contacts of the audio jack on the logic board. Can anyone help how to do this? Thanks a lot in advance. Martin