I have a Firepower, the left eject (left lock) does not eject the ball... at the start of the multiball the machine states "Fire 1", "Fire 2" but does not give the FIRE 3 sound clip.

The left eject does not work during the solenoid test.

The eject coil has power to it, and fires when it is shorted to ground. I have continuity from the coil all the way back to the Q21 transistor on the driver board.

I'm a little lost once I'm troubleshooting on the boards,.. so any help is greatly appreciated!

Thanks in advance

Can I get step-by-step procedures on how to test the transistors? What modes of the multi meter, and what am I my looking for?

I know there are three legs for each transistor. So I test each of the three legs, but where do I test between?

Thank you.