Quote Originally Posted by antrad View Post
Hello, I have a Squeezebox xr00001, no speaker audio. It does have audio out the headphone jack, and going through the menus I found a section which indicated "headphones detected" whether anything is plugged in or not. Any info on how it determines something is plugged in? I'd like to have a go at repairing this unit..
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?