The steps opto on my Funhouse wasn't working...turns out both sides were emitters! I replaced both sides, and it seemed to work for a few games. Now, the Hot Dog mode starts up (or adds time to itself) every time Rudy opens his mouth.
I pulled the opto board, thinking that I'd see something obvious. Looking through the manual, it looks like I might have the optos wired incorrectly.
There are four wires coming from J3. Collector/White. Emitter/Green. 12V/Grey. Ground/Black. I presume that white goes to the collector (the dark opto) and Green goes to the Emitter (the white opto). Does grey go to the emitter and black to the collector?
Would wiring this incorrectly even lead to the behavior I'm seeing, or is there likely some other problem?