picture of the inside of the machine would help!, if the board is in the back and has three cable harness going to it, it is a S" model. some parts are interchangeable with the S+, reels, hopper, handle, maybe the coin parts, top and belly glass, maybe the buttons, but that is about it.
if you could identify which wire, in which harness was damaged, and why you think the board was damaged, it would help try and figure what caused the problem.
KLAR they have a link on top of the home page, they repair "S" boards.
Jim