Both boards use the same through hole driver transistors, so that is not an issue.

Chas probably wanted you to try shorting it to see if it fired, but given that you don't feel confident in this, that is not where I would start.

Disconnect the connector for this coil from the board.

1. measure the transistor against other ones, you should see one pin that doesn't give a value and is open, if the transistor is bad. If it appears within spec as for others, it's good.

2. I would inspect the wiring. There are circuits with multiple coils in series. Wires are pigtailed from one to the other. I haven’t looked up the schematic for this, but check the prior coil that feeds to the one in question for the same colour wire. It the pigtailed wire from the prior one has an issue (broken off), the prior coil will work but the next one will not, or any after.

3. Check the small coil wires that go into the coil and warp around and are soldered to the coil lugs. Sometimes these break free and are just touching, enough to give a DMM reading, but not enough to carry the current for a fire.

4. measure the coil again, with the connector pulled, and make sure you get resistance. If you get anything, you’re likely ok, as it’s not a locked on situation, just a no fire.

5. Your prob should lie in the above. If not, you may have logic issues, and likely other things not working, but at this point that is very unlikely.

Don't shotgun the transistor at this point though, go through the other things I mentioned first. I have rarely had to replace anything other than flipper transistors on Sterns for drivers, having said that, I've replaced many flipper ones as they under valued the need here.

I'm amazed people are going this route. Most situations where a coil has stopped working comes down to a simple broken wire somewhere. All the things I outlined should be the first simple checks before short the transistor (which does have some risk if you screw it up).

Always check the easy, quick stuff first.