Sana'a
Check transistor like this:
https://pinside.com/pinball/forum/topic/vids-guide-quick-bally-driver-board-repair-bulletproofing
(Topic ID: 204543)
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Quoted from pinmods:Or just send you the board for you to bulletproof?
Might not be the board.
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Pull the Coil fuse and then put the game in Switch Test.
Make sure there are no balls installed.
Are there switches stuck on? Do all the switches give back the correct switch number?
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Is the new coil wired in reverse? Look at the band on the coil diode, as they can be soldered on either way.
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Reno, NV
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