Overhaul the score motor in an electromechanical pinball machine so that it works like new. Step by step with pictures so than it can be easily rebuilt.

Fix those EM Score Motors so that your Bally & Williams pinball machines work perfectly. Easy to follow instructions.

Aug 11, 2024 · Bally score motors from 1965 to 1977 operate for 180 degrees for each score motor cycle. The timing diagram depicts one full rotation of the score motor which is two score motor cycles. Both cycles provide the same switch operation.

Apr 14, 2014 · The most typical reason for the score motor to continue running is because a score reel isn't registering that it is at zero. Pull the reels and check the switches when each one is at zero. Adjust and clean as necessary.

Jan 30, 2021 · I've always been able to resolve a running score motor. This one was working as well until a few days ago. All the score reels reset to zero with no problem. All the switch gaps are proper. Nothing else runs with the motor except the bonus unit reset solenoid. It's operated by score reel switch 2B. I've checked every switch that can turn on the ...

There is one special Score Motor switch on the first cam that controls the Score Motor itself. This is switch 1F (also yellow) which is actually a make-break switch. One half of it is Normally Open at rest. The Score Motor can be triggered to start running by a variety of switch inputs.

Nov 20, 2024 · A malfunctioning score motor can cause all sorts of issues. A switch that does not close when it is supposed to can prevent scoring, not count the ball in play as being over, or not reset the active player.

The Score Motor's Home Switch. Check the score motor's "home" switch (on Gottlieb's, usually at 1C or 4C, and usually switch stack number 1 on Bally and Williams.) This switch is what turns off the score motor when it rotates to a "home" position every 120 or 180 degrees.

Score Motors are used in electromechanical pinball machines and other arcade games to support more elaborate or sequential functions. This short video shows how the Score Motor generates pulses at specific times in its cycle by activating switch stacks mounted around its perimeter.

Jan 27, 2015 · There are several score motor switches associated with the bonus unit in this sequence but I don't want to jump into the score motor switches without understanding the sequence. Any thoughts appreciated. Thanks for the pics. The things that don't look correct are the copper fingers on the wiper.