I have a rev-7 of SF zero that just quit working out the blue. I did an IC repair for the battery and it worked fine for a few months, then wouldnt turn on. Ive tested the MoBo on otherboards, and i have no bent pins, ive cleaned the contacts and ensured a the boards had a good connection. I can Ohm out CN9 to the resistors the pins should make contact with but dont know where to really go from there. (Ive cleaned up the solder work as well)