Found the switch portion of the headset jack working normally, BUT the voltage there is only about 20mV open. Tried using a 1K pullup, to see what would happen, but the line is low resistance to ground. Traced it back through a few components, until it splits through 2 560 Ohm resistors. Disappears through some vias into the middle layers. I was hoping to find a defunct transistor switch. Any further ideas? Or a portion of a schematic?
Originally Posted by antrad