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(Topic ID: 238376)

Stern Stampede

By mikusm

5 years ago



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  • Latest reply 5 years ago by mikusm
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#1 5 years ago
OP
 
MJM

mikusm

MJM Amusements

US San Antonio, TX

7y 71,150 162 1

Stern Stampede (EM) question. Game is not ending after either a 3 ball or 5 ball game. I have checked continuity, adjusted and cleaned the following switches:

Lock Re.

Ball Count Unit Post SW. "O" pos.

Coin Re.

A-8

A10

The Trip relay trips correcty with power applied and actuating the Lock Relay. So the coil is good and A-8 is good.

Also, there is continutiy in the Ball Count Unit between 0-6 or 0-10 depennding on 3-5 ball setting.

I have continuity from GREEN to the Game Over Re.(Trip) but it isnt acutating the trip. Thoughts? Not a strong enough connection is all I can think or Im in the wrong area altogether

Stampede (resized).PNGStampede (resized).PNG
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#2 5 years ago
 
M

MarkG

Fun With Pinball

9y 71,300 4,364

OP
Quoted from mikusm:

Also, there is continutiy in the Ball Count Unit between 0-6 or 0-10 depennding on 3-5 ball setting.

What's the resistance through the Ball Count Unit when the Game Over Trip relay should fire? Continuity only tells you that the meter sees a path between your probes. In this case it could be the path from the blue-orange wire, through the A-8 switch, Game Over relay coil and transformer to the other side of the Ball Count Unit. Nice to know but it doesn't really tell you anything.

There needs to be a path of about an ohm or less through the Ball Count Unit when the Game Over Trip relay should fire. Otherwise there's probably always a resistance of 10 or more ohms through the path described above.

/Mark

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#3 5 years ago
OP
 
MJM

mikusm

MJM Amusements

US San Antonio, TX

7y 71,150 162 1

Quoted from MarkG:

What's the resistance through the Ball Count Unit when the Game Over Trip relay should fire? Continuity only tells you that the meter sees a path between your probes. In this case it could be the path from the blue-orange wire, through the A-8 switch, Game Over relay coil and transformer to the other side of the Ball Count Unit. Nice to know but it doesn't really tell you anything.
There needs to be a path of about an ohm or less through the Ball Count Unit when the Game Over Trip relay should fire. Otherwise there's probably always a resistance of 10 or more ohms through the path described above.
/Mark

The resistance was less than an ohm. Found the problem though. It was the power (GREEN) connection to the ball unit. I was testing at the board/connector junction and the connector was not touching the board. Thanks for responding.

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