Cleaning up battery leakage

This summer, I received a box full of parts containing a Grid Compass 1101 which I was told was "beyond repair due to a battery leak". I've been looking it over, and I'm not so sure -- a battery definately leaked over the section of the board containing the bubble memory sockets. however the board actually does not look that badly damaged - the coating seems to have mostly protected it - there is visible corrosion at solder joints, however again - not that bad - most of them just have a rough texture. The board however is quite covered in some areas with a white substance which obviously came from the battery and "dried up". It is quite firmly glued to the board, and appears to be slightly conductive. I've carefully scraped away a small section, and as noted above, the board underneath looks to be in not-that-bad shape ... however mechanical removal would be very tedious the the risk of damaging something high. I don't know what type of battery it was, because it's long gone, and I've not seen the inside of this particular model before... Anyone got any suggestions on ways to clean this up - It's a nice and somewhat historic machine, which I would love to salvage if at all possible. (Cool little bubble memory modules) Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html