Hello! Got a 5K Late 2015 iMac here with no power. Tested with a known good PSU and nothing. No LEDs light up and no signs of life. I cannot find the schematics for that board anywhere not even for sale... Anyone here has the schematics for a board that has similar layout? The board had corrosion on an IC(or MOSFET, I can't know for sure because have no schematics) near the second bottom screw hole on top of the board, not the classic area near the USB ports where these Macs generally corrode(I live at a beach city, so there's a lot of sea air here).