Last night, was playing my Xmen LE, got a multiball, the nightcrawlers were popping up, all was good. Then the nightcrawlers stay up, one ball is behind the nightcrawler on the left ramp. Game goes into ball search, doesn't drop either of the nightcrawlers, and I think, this can't be good. So I've done a little research and it looks like it's my aux board, which is revision B, but it does not have the updated harness. Also both playfield fuses in the lower right section on the bottom of the playfield blew. I replaced, and the nightcrawlers popped up when the game turned on and blew both fuses again.

So my question, I'll get the replacement aux board and updated harness from Stern, hopefully. My concern is that something else also got cooked, so how do I ensure that no other parts of the game were damaged so that when I replace the aux board, it doesn't get re-fried? Basically what all should I check and how.
Thanks in advance for any help!!