Hello I have a Dirty Harry Pinball Machine that was given to me, and it needs some fixing. I have no idea how to do this never messed with any pinball machines. The problem I can tell by looking over all the boards is the WPC CPU Security Board Assembly. It had batteries in the holder, looks like for a verryyyyy longggg time. Since all the acid is all over the board and chips it even went all the way up the wires that come out from the holder to the board it self. I tried to turn it on but nothing happens no lights come on, just a ding sound and that's it. If any one can help me with this project i sure could use a lot of help. Don't know if the board can be fixed or if its even the problem. Thanks in advance for any hint, help or suggestions.