My SE/30 had also a exploded battery.

Believe me, I'm a technician, and it is practically impossible to fix te board.

Luckily I found a new SE/30 for €20,-, so that problem is already solved :beige:

EDIT : I forgot to say that it is practically impossible to remove all of the battery-acid.

I tried 5 different sorts of cleaning methods (no, I didn't do anything with a gas-burner :lol: ) and the acid is still there, although a lot less.