I searched this forum for Triple Action machine issues. I copied the below from a thread that ran about 21 months ago. I was doing essentially the same thing, and getting the same result. I knew I needed the ball index relay to energize, and wondered why the hundred point switch was in the circuit.. No wonder I couldn’t find anything wrong, there was nothing wrong! The solution should have been obvious. Thanks again to those who helped.
‘Okay this is hard to admit but i dont want to abandon this topic i started unresolved.
Let me start by thanking anyone who tried to help me with this. If it wassnt for people like you this machine would still be the 250lb paper weight it was when i bought it.
So before this issue cropped up i had been having issues with reset. After some good advice from someone on a different forum i fixed the reset issue and played 2-3 full games with no issues. Then i decided to change adjustment from adding replays to add a ball. It was late and i was ready for bed but i wanted to test add a ball to make sure it was working. Wanting to make as little noise as possible (kids were sleeping, it was late) instead of playing the game to test it i knocked the appropriate targets down by hand (had the glass off) and racked up a few extra balls. I was then satified that the machine was in working order and wanted to get it to game over so i could unplug it and go to bed. Once again wanting to make as little noise as possible i picked up the ball from the shooter lane and droped it down the drain. Outhole triggered but ball count diddnt change. (Houston, we have a problem.....or so i thought.) At the time not fully understanding the schematic i thought the ball index relay was energized by the outhole relay when outhole is triggered. This is not the case the ball index is energized and held the first time 100pts is scored which during normal gameplay is pretty much at the start of every game.....unless your an idoit like me and start the game and then pick up the ball and drop it straight down the drain in which case the ball index wouldnt be energized and ball count wouldnt step down.
In short the answer to my problem is there is no problem i've just been having a 48hr long blonde moment.‘