Nice. 
Thank you for the update.
I have an EDM 031 not getting voltages on those lines to the WiFi IC, but IC reads normal diode mode on test points, has 3.2 and voltages present at coax connectors on other side too.
Same .29amp draw them drops to .07-08.
Uart said check F7002 and check WiFi module, all good in that fuse room too, 5v stepping down and 1.8 voltage present. No shorts around southbridge just that missing voltage on those two lines you marked orange and yellow in the photo here (assuming it will translate relative to the 03 series.
I’ve got another south bridge to try, hoping to avoid it, but also don’t think I should order a new WiFi module, can’t find it either for this new version…
Console will one beep no light no life, clearing logs got it to turn on at first, stayed on long enough to restore and setup and update even. Rebooted it a couple times. Reassembled it and (I think) plugged in the WiFi antenna for the first time since clearing the logs and it didn’t turn on again. Need to try to recreate that.
Wondering if you have any wisdom and thank you ahead of time!
I should say I’m getting <1V on those components until it drops from .29amp draw on the dcps
I had the same error. 80C00136 EMC - USB - BT Device not found. In my case, the capacitor behind the chip was shorted.