Here is a pic I circled J11. If you dont have that maybe your version of the boards is different. These boards are printed with model numbers and revisions
I have GSA CARD ASSY: COIN-500-013 REV.B. I had a leak also, it was a small crack in the hose for me. You should be able to locate that leak and fix it just how I did
Scriber.. when was this unit shipped as I have 2 of them, first of April, and I have no J11 wires...
I am curious what this power is going to, and why it is needed on your boards. Following the leads on the board I have pulled now..