Acetone is to stop the cap goo from rotting the board any further. It is not going to help fix the machine because the caps themselves are either open or shorted out and to fix it they need to be replaced.
As is, the caps are still leaking and that goo is eating away at the board wires, breaking them. The more they break, the more work needs to fix it. Putting the board in acetone stops the goo from doing any further damage. That is why it must be done.
When the caps are replaced in the recapping process, the board is restored to near normal and most of the time will boot up on the first go. Most of the time. Question is, how much damage the cap goo did to the board and needs to be repaired? Most of the time this is minimal, and for Classic II easy to do. If this was a LC475, lets say... it becomes a much harder job to do.
So soak in acetone and then send to get recapped?


