Need help in coin mechanism, I had set my machine to accept coins for single play. For the rest of my machines, it accepted it and credit 1 to the machine. It requires me to press the start button before I could start playing, else it will just keep on adding credits.

I have one particular machine that when I insert the coin, it starts the game immediately without pressing the start button. Continues to add more coins to it, it add another player in the game and launch the ball into play, does it means my coin mechanism is faulty?

TSPP

But I had change the mechanism to electronic, so it does not trigger the switch at the bottom.

I tried to replaced the coin box with a new set, it seems that it is the setting on the machine. checked every wire and don't seems to be shorted. the wire should be connected to N.O switches right?