I don't know if the machine was recently moved and this might be the most basic answer, but did you check to make sure all plugs in the backbox are seated correctly?
Run a switch edge test and run the balls down the trough to make sure each switch registers. Drop one in No Way Out and the Lost Mine just to be sure. There is a sticker on the lock down receiver that says how many balls should be installed. Make sure they're all there.
Were those solenoid a working before or were they down when you got the game?
Check TP voltage and see if they are all reading normally. If you are blowing the fuse on start up something could not be hooked up right or something simple like that. A plug that is one pin off could do it for sure
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