(Topic ID: 283583)

Sound Stage Score Motor Continuous Running

By megoman

1 year ago



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  • 8 posts
  • 4 Pinsiders participating
  • Latest reply 1 year ago by ArgosySK
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#1 1 year ago

My friend just picked up a Chicago Coin Sound Stage. Game is in overall nice condition with clean cabinet and back box.

When Start button is pressed the score motor engages, the game scores reset, but the score motor keeps turning.

Not sure what switch is causing the score motor to stay energized? Any help with identifying cause / fixing would be greatly appreciated.

#2 1 year ago

If the Reset relay is stuck activated when this happens, make sure all 8 of the Score Unit "0" Position switches are opening.

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#3 1 year ago

The reset relay does stay activated. The reels all correctly reset to zero so the switches are activating. How specifically do you check for what you indicated - 0 position switches opening?

Thanks

#4 1 year ago
Quoted from HowardR:

If the Reset relay is stuck activated when this happens, make sure all 8 of the Score Unit "0" Position switches are opening.

Quoted from megoman:

How specifically do you check for what you indicated - 0 position switches opening?

Find the 0 position switch on each score reel and check it like any switch (below). You could even put pieces of paper or cardboard in each one and see if that makes any difference.

For a switch to work 3 things are necessary:
1) When open, there should be a small space between the contact points (duh)
2) When closing, the long blade's contact point should push the short blade's contact point enough to move the short blade
3) The contact points should be clean, which they usually will be if #2 is happening

#5 1 year ago

A lot of Chicago coin machines didn’t use a bladed stack switch instead a wiper disc and fingers were used for all the score reels functions except for the end of stroke switch.

4 weeks later
#6 1 year ago

Figured out why motor keeps spinning. When ball goes into out hole, it is activating the correct switches and firing the relay that signals getting the ball moved from the out hole. However, the relay just gives a quick fire and is NOT activating getting the ball moved from the outhole. If I manually hold the relay, the coil fires and moves the ball to the shooting lane and the score motor stops.

Any thoughts on how to correct? Thanks

#7 1 year ago

This can happen when there isn't a good connection for the power. I would ensure the jones plugs are clean, and the switches for in the outhole kicker are clean and have the correct gap. For other EM machines the main power will go thru the tilt/hold/game relays it they are not clean they can rob strength from the coil. (Sorry don't have access to a Sound stage Schematic).

#8 1 year ago

I had this happen, and it was the bonus stepper switch in the outhole circuit.

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