A customer of mine stored his High Speed in his basement for several years without removing the batteries. Unfortunately, the head was stored laying on the playfield glass, so all of the corrosion damage on the CPU ran "up" that board, and dripped onto his display driver board. The display driver board seems to have surface corrosion on almost every part.
I've been trying to source replacement parts to rebuild it, and can't find any replacements for the UDN7180A from any of the reputable suppliers I'm familiar with. Might it be possible to simply clean up the legs of these ICs and reuse them? Is there a replacement for this IC out there?
Thanks!