Hot Tip EM
Williams, 1977I have a hot tip EM. Ball in the outhole. Power on the game, it immediately resets the game and kicks the ball into the shooter lane. If I press the start button, the game resets again, but never adds a second player.
Any ideas?
Thanks!
Erik
If I get the game to start in game over state, I start a game and adds one player and goes to ball one properly. The only way to add players is to manually trip the coin relay.
I suggest checking the lock relay. It immediately energizes when the machine is turned on and powers the game-over relay trip coil, which causes the machine to immediately go to game over when the machine is powered up. It sounds like that’s not happening.
Quoted from wolverinetuner:I suggest checking the lock relay. It immediately energizes when the machine is turned on and powers the game-over relay trip coil, which causes the machine to immediately go to game over when the machine is powered up. It sounds like that’s not happening.
Just confirmed. Lock relay is engaging and staying engaged the whole time the game is on. Then just intermittently the game will unlatch the game over relay and be in game over state. Other times it starts a game right away.
Three switches have to close at the same time for the game over trip (unlatch) coil to energize. They are on the lock relay (which is obviously closed the entire time the machine is on), the outhole relay, and the game over relay. Unless you’ve got a short somewhere else, either the switches on those relays are so close they sometime close the circuit when they shouldn’t, or the problem is further upstream, energizing or not energizing either or both relays when they shouldn’t be.
Quoted from wolverinetuner:When you turn the game on after being powered off, does the game over light come on in the backbox?
Sometimes. Haha. If it doesn’t start a game immediately, yes, game over light on.
I would also check the wire connection tabs on the switches for the outhole and game over relays to make sure they aren’t so close that they can cause a short.
Another possibility could be the game over relay latch and trip mechanism itself. Does the relay latch and trip consistently when you work it manually?
I’m sorry, I think I was incorrect about the switch on the lock relay, I believe it is open once the machine powers on (being closed when turned off is enough for the game over trip coil to energize when the pin is turned on).
Quoted from wolverinetuner:Another possibility could be the game over relay latch and trip mechanism itself. Does the relay latch and trip consistently when you work it manually?
Yes.
Check the coin switches in the coin door.
A coin will usually just start a game on an em rather than just adding credits.
Quoted from CrazyLevi:Check the coin switches in the coin door.
A coin will usually just start a game on an em rather than just adding credits.
Yep. Messed with those a bunch. They think they are operating properly.
Quoted from wolverinetuner:I suggest checking the lock relay. It immediately energizes when the machine is turned on and powers the game-over relay trip coil, which causes the machine to immediately go to game over when the machine is powered up. It sounds like that’s not happening.
Quoted from chuckwurt:Just confirmed. Lock relay is engaging and staying engaged the whole time the game is on. Then just intermittently the game will unlatch the game over relay and be in game over state. Other times it starts a game right away.
But what about the Game Over Trip relay? It should trip when you turn the game on just as the Lock relay fires. If it doesn't I'd double check the three switches in red.
Hot Tip Game Over relay (resized).jpg
/Mark
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Dearborn, MI