I believe that's the aux power driver board, the interconnect would be the long skinny one under the CPU.
Blown traces are almost always related to overfusing or poor rework. I'd bet overfused and/or bad diodes on the flipper coil.
It always amazes me how people will do more work to hack something than it would take to do it right!
that is the aux power driver board pictured. they totaly by passed the interconnection board all together (the board and wiring loom in the picture are spares as i didn't take a photo of the 'repair' before i removed it)
