Not likely going to be the capacitor. If the transitor blew that hard, you've likely got issues into the logic now. Damage into the data lines isn't uncommon in such cases on this board.
You'd be best off to send to a board repair person for proper repair.
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Rob Anthony
Pinball Classics
http://LockWhenLit.com
Quality Board Work - In Home Service
borygard at gmail dot com