Here's the previous thread with way too much detail: https://pinside.com/pinball/forum/topic/lw3-coil-meltdown-help
Data East Lethal Weapon 3 machine.
Current situation:
Ball launcher coil melted down 10 days ago: it was stuck on.
Replaced the coil, still stuck on.
Accidentally blew the new coil with incorrect wiring, replaced again.
Found the transistor was an open circuit, and since there were other issues on the PPB, decided to replace it.
New XPin PPB installed today, ball launcher coil still doesn't fire in game or diagnostic mode.
When a new game is started and the trigger is pulled, it makes the sound like a gunfire from the sound board, so the CPU knows the trigger was pulled, but the coil doesn't fire.
There is voltage to the coil. Like other coils, it jumps between 78v and around 20v.
I'm just not sure what direction to go in tracing this issue right now, and it's getting pretty frustrating, not to mention expensive. Any help is appreciated.