Quoted from mtmellum:1. The lower jet bumper stayed on when triggered during the test. I suspect the cap, diode or resistor as the switch seems clear when it fires. I have full rebuild kits to do at some point. I will replace the components and clean the switches. Any other opinions/thoughts/suggestions?
I had a similar problem with the LL pop locking on, double check your driver board transistors:
https://pinside.com/pinball/forum/topic/firepower-project-begun#post-2244962
"it was a problem on the driver board. Had to change the tip122 and pre driver 2n4401. Even though TIP122 tested OK, it was bad. After changing those 2 parts, and adjusting the pop bumper switch stack, it worked again!"
Hawesville, KY
