We were having trouble with the speed pot coming lose and reading the wrong RPM on our BP Explorer/DX32 when trying to adjust it we broke a wire off. At this point several switches stopped working.
jog/rpm+/-
spindle stop
cycl start
spindle enable
all stopped working so we turned off the machine and re-soldered the wire we broke and restarted machine but there was no change

Thinking we blew a fuse I opened the cabinet door and found the new AA size batteries exploded (some one had put in standard alkaline instead of the rechargeable I had bought).

I disassembled and cleaned every board and reassembled aside from some missing finish on the CPU heat-sink I think I caught this in time to avoid major damage. However now when we start the machine the computer boots OK and BMDC loads and operator interface starts with the error EMERGENCY STOP ACTIVATED and I can not find the fault.

Any ideas would be greatly appreciated