I have a High Speed that came with a blown out pop bumper coil. Coil and diode replaced but nothing happens. Also new rottendog MPU board that seems to work fine.
Here is what I have done:
1. Pop does not trigger in coil test but the coil switch does indicate on switch edge test
2. Switch for pop bumper (playfield) does not indicate closed on switch edge test
a. I also connect the switch on the backside, no indication during test
3. Checked wire continuity back to board and both seemed to check out
4. Switch seems to work because I tied it to an adjacent pop bumper and it activated
Any thoughts on what to try next? Everything else on the machine seems to work fine.
Thanks
John