I am working on a friends LW3 that has a couple of obvious issues, I believe that they are unrelated but as I am not really familiar with the board set maybe they are.
Immediately when the machine is turned on, the ball eject coil (Q45) energizes. The TIP 122 tests fine, so it is perhaps a pre-driver. Which one and how would you suggest that I proceed?
When I unplug CN11, the coil does not energize so I believe that it is an MPU problem.
Second issue is that in attract mode, pushing the right (and possibly left) flipper button energizes the VUK coil #2 (Video mode saucer and Start Multiball saucer).
What can you recommend next?
Thanks for any advice.