If ...
I have a synth that has a main board with capacitors jumping across the terminals on the big chips an a small wire running from pins on the chips back into another area, and the battery numbers say I need a "new main board", what would be the chance of finding out the procedures I need to perform to change the board again---or perform some rework to fix it or can I pull the reworks off so it will function in a "default" manner?