I've had a '67 KOD for a few years that has played great and no issues with the scoring/awarding of specials. Suddenly a few weeks ago, the game stopped lighting/awarding specials for either the 2-9 or 2-Ace sequence.
I switched to 3-ball as a diagnostic and it awards for the 2-Ace special but not the 2-9. By the way, all the relays in the head are tripping as they should.
Here is what I have checked so far (with no solution):
- Visually inspected and lightly tugged wires on the 3-5 ball jones plug. They all seem OK
- Inspected the playfield to cabinet and cabinet to back box jones plugs. They all seem OK
- Inspected the 2-9 (YB) and Sequence Complete (ZB) relays in the cabinet. They all seem OK and will 'force-fire' when jumped from another coil (I used the 50pt coil). When triggered in this manner, the specials 'work'.
I have schematics although I will admit to being not that great at tracing on them.
Would appreciate any and all input - I'm pretty stumped. I keep the game in good shape although I have not played it as much lately. Live in the St Louis suburbs if anyone wants to check it out and play some other nice EM's! (Quick Draw, Heat Wave and Nags).
Thanks - Greg