Have you ever questioned your intelligence? I have resolved the issue here and boy am I really embarrassed to admit it was all related to the audio chip. I just honestly couldn’t find any other fault with the board and decided I just needed to start pulling IC’s, but since I’m gunshy about BGA chips I decided I was going to start with where I first noticed the faults and pulled the ALC5639. Why the hell I didn’t do this to start, I couldn’t say, but lesson learned on this one. Soon as the chip was pulled all resistances came back into spec, plopped another chip from another donor board and the values remained the same.
So yeah, while I actually did learn so much about the SYS rail and a lot of other things I am so upset with myself that this wasn’t the first thing I did. So note to myself, and to other hobbyist idiots like me, remove the big variables from the equation first. I could have saved myself a weeks worth of headache and troubleshooting had i just assumed my work or the component was bad and pulled it for re-testing.
So, im an idiot, but I’m also an idiot with a completely functional switch lite that is ready to get buttoned up and sent of to the next owner.