Well I didn't think I'd even get started on this until some time into the new year, but I had some free time today and couldn't resist.
Here it is. As it sits, when plugged in and turned on the game lights up. When the coin mechanism is triggered on the coin door it triggers the score motor to complete one cycle and then it stops.
This is my first project machine, and first EM machine. Because of this, my plan is to run through Clay's systematic approach, outlined in the guides on www.pinrepair.com.
I started by checking the fuses. They all tested fine, but the 8A line fuse was actually a 20A fuse! Changed that out immediately.
Next was to check out the stepper units. After examining the 4 large stepper units, 2 of them had some issues, and two of them seemed to function quite well.
Over the years someone used some type of grease on this unit. As you can see in the video above, it's gotten pretty sticky and the stepper is almost unable to step up/reset at all.
After cleaning it up and putting it back together, it operates smoothly again.
You can see in the above video with the stepper working properly that there are two switches associated. The first is a normally closed switch which opens when the unit is reset to it's minimum. The second switch is a make/break switch which is activated when the stepper reaches it's maximum. These switches were already set up nicely and didn't need any adjustment. I simply cleaned and gently filed the switch contacts to ensure good operation.
Sent from my iPhone using Tapatalk
Here it is. As it sits, when plugged in and turned on the game lights up. When the coin mechanism is triggered on the coin door it triggers the score motor to complete one cycle and then it stops.
This is my first project machine, and first EM machine. Because of this, my plan is to run through Clay's systematic approach, outlined in the guides on www.pinrepair.com.
I started by checking the fuses. They all tested fine, but the 8A line fuse was actually a 20A fuse! Changed that out immediately.
Next was to check out the stepper units. After examining the 4 large stepper units, 2 of them had some issues, and two of them seemed to function quite well.
Over the years someone used some type of grease on this unit. As you can see in the video above, it's gotten pretty sticky and the stepper is almost unable to step up/reset at all.
After cleaning it up and putting it back together, it operates smoothly again.
You can see in the above video with the stepper working properly that there are two switches associated. The first is a normally closed switch which opens when the unit is reset to it's minimum. The second switch is a make/break switch which is activated when the stepper reaches it's maximum. These switches were already set up nicely and didn't need any adjustment. I simply cleaned and gently filed the switch contacts to ensure good operation.
Sent from my iPhone using Tapatalk