Im doing a few minor repairs on a friends pinbot. I have everything fixed except the left jet bumper. Neither the switch or the coil work in test mode or game play. The coil fires if I ground the tab on q73
System 11 troubleshooting is not my strongest skill so I could use a little hand holding here.(The repairs I was asked to do originally were mechanical issues, I just want to see if I can fix this problem for him as well)
I confirmed continuity from both the coil and all switch wires to the connectors at board and all is good.
The lower scoring switch on that stack works.
Please advise, thanks

Thanks for the detailed response
Board work is not my strong suit, there is another buddy in our circle who is much better at it...I will pass this along to him...