I'm puzzled by the behavior of a 1966 WMS Full House ball advance. The machine acts as the schematic shows, but it won't advance the ball count.Bad Relay or Broken wire?
This is a single player where it has three rollover lanes at the top that the ball must pass through. Any one of the lanes will trigger the Ball
Index relay. To advance the ball count the Ball Index Relay must be energized. But when losing the ball into the outhole the Outhole relay engages which immediately releases the Ball Index relay and runs the score motor which then fires the ball release solenoid. Because the Ball Index relay is released immediately by the Outhole relay, the Ball Count Unit Step Up is never advanced. The Ball Count is supposed to be advanced through the Ball Index relay but by the time is supposed to be fired, the N.O. switch on the Ball Index relay is already open and nothing happens. It seems like there's a timing problem like the Ball Index relay should release a half second after the Outhole relay is engaged, but there's no delay.
Am I looking at this wrong? What am I missing? Any ideas?
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Because the Ball Index
relay is released immediately by the Outhole relay, the Ball Count Unit Step Up is never advanced.
On 9/21/20 11:24 PM, Daina Pettit wrote:
Because the Ball Index
relay is released immediately by the Outhole relay, the Ball Count Unit Step >> Up is never advanced.
The Ball Index relay should not be immediately released by the Outhole >relay. In parallel with the Outhole relay switch is the normally closed >Score Motor 3D switch. So while the Outhole relay switch may open >immediately the Motor 3D switch should hold the Ball Index relay active >until the #3 cam opens the 3D switch.
The Ball Count Step Up solenoid is fired by the Score Motor 1A switch
which should close well before the 3D switch opens.
If your Ball Index relay isn't holding long enough to let the Ball Count >Step Up solenoid to fire I suspect that your Motor 3D switch isn't
closing properly which lets your Ball Index relay release too soon.
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