Quoted from pinmike:That is correct but it would be a good idea to test those diodes on that shooter coil before changing out that transistor.Because if those diodes are bad/shorted on that coil it will blow out the new transistor you just put in.Many times it’s just the transistor but I ran into a few cases of the diodes were bad and I had to start all over again.
There are no diodes on the coils in wpc games (except the flipper coils). The diodes are on the board.