Form 1 + Motherboard not powering on

Hello, I have recently acquired a form 1 and the previous owner failed to his maintenance and the tank was effectively glued in place. That problem has since been resolved(mostly) but a problem stemmed from the mess that followed. Some fresh resin seems to have shorted my motherboard, with obvious damage to L6 and L7 plus one track. I can fix the track with some circuit writer, and I have the part for L6. I wanted to confirm the part for L7, if it’s different, and any recommendations for testing. The power supply should be good, but I would like to confirm I’m not over doing with that as well.