I've got an annoying issue with Cyclone that I can't seem to troubleshoot. The top ball toss (cats) switch is randomly activated when you start a new game. It happens when you push the start button or could also be the ball shooter lane switch (as the first ball drops in). The trick is, the problem does not occur every time, only about 5-10% of the time. I've looked at the switch table and checked diodes/wiring on start button, ducks (top), left coin switch, as well as shuttle 5K, ferris wheel entrance, and ball shooter lane. All tested OK. The rest of the machine plays fine, no other issues. Any suggestions about where else to look, and why this is happening infrequently with this specific target?

Any suggestions?

No issues reported in switch test, I've run that dozens of times.

Good idea on the faulty diode, I'll look at replacing most in the switch matrix row for that drop target. If the problem still occurs, I'll go for replacing the resistor packs.

Thanks for the suggestions, got some things to try now!