Merrimack, NH
Back to working on the Little Chief I picked up a couple months ago. With no credits on the machine, when I turn it on, the scoring motor runs non-stop. This happens immediately without hitting the Start button in the front. I got the motor back to it's reset state and unplugged it so it would not turn. When I turn on the power, with no credits on the machine, the following happens:
* Lock relay energizes as soon as the machine is turned on (this is normal operation)
* Almost at the same time, the Coin relay energizes which then energizes the Reset relay and the Game Over relay (which latches)
If I manually flip the armature on the Coin relay, the Reset relay de-energizes. With no credits on the machine, the Coin relay should not energize. Looking at the schematic (photo below), I tried figuring out what is the path that is giving me trouble, but I'm having a hard time understanding what could be energizing the Coin relay.
* First I looked at the path from the Coin relay through the 10-cent Adjust Jack. That is not a possibility because the jack is in position #2.
* Second I looked at the path through the 5-cent Adjust Jack, which is in position #1. That was a possible path so I opened the Anti-Cheat switch on the coin door but the Coin relay still energized, so I don't think that's the problem path.
* Third I looked at the path through the Coin Relay switch. I put a piece of electrical tape to keep the switch from making contact. Coin relay still energized.
That is all I have done so far and I'm out of ideas on what to do next.
Thanks in advance,
Alberto
_Sch_Coin_Relay (resized).jpg
