yes turn it rightaway with battery leakage and dont turn on again till you removed it
as l managed to destroy one amiga 2000 in mint condition l think wasint ever used
that way aghhhhh and amiga 4000 l brought died after 1 o mins with same issue
clean with something that will evaportate not leave any residue . tiny bit water baking soda whould netulise the acid l whould have thought