Heiwa Duncan SP Pachinko

[osibort]

I have a Heiwa Duncan SP Pachinko machine that is having some problems, and I was wondering if you could steer me in the direction to try and get this fixed, or how I might be able to fix it myself?

I am having an intermediate problem where sometimes after 5 balls launched, or sometimes as many as 100 balls launched the machine will stop launching balls. When activating the launching knob, the actuator will just stop working and not even try to launch a loaded ball. I also notice that when this happens and if I try to hand feed balls into a payout holes on the playfield that the machine does not payout when this failure happens. I can feed a ball into the video slot machine hole and the slots will spin, but again no balls are awarded.

I have checked the ball launch mechanisms, and checked as many connections as I can for a loose connection, but I can't seem to fix the problem.

Can you help? My children love this game, and it has been down for a few months and i would love to get it working again.

Thanks,
Troy

[birdbrain]

go to the top of the screen and do a search for "dongle" see where that takes you it sounds like a loose connection of the dongle or a bad solder joint on the dongle itself.

[Tulsa]

As far as the payout goes, it's sounds like you might have a ball jammed thats preventing it from paying out. Trace the ball track from the top hopper down, there should be a mechanism with a cog on it that will count the balls to be released for payout. Put a ball in the activation pocket and check to see if that mechanism is releasing balls. If not, trace the ball track from that point and see if you can find one jammed.

[dishpan]

Also check that the ball shut off gate/lever is not closed. It is found on the ball track above the payout motor.

[birdbrain]

the machine apparently just shuts down but works fine at other times. this would indicate an electrical problem rather than a mechanical blockage. the fact that the shooter and the pockets die together points the direction to an electrical problem. go pull your dongle (off any machine) and you will replicate the problem as described.

[MrGneiss]

Do you have any pics or info for your machine? More info might help us figure this out....

...plus, older machines don't have dongles.

AND...

WELCOME!!!

[daverob]

Sounds like a problem on the power supply board on the back of the pachinko.

When the power enters the pachinko (after the mains voltage to 24v stepdown transformer), the power supply board usually splits and regulates the voltage to four voltage rails, 5 volts going to the cpu logic, 12 volts going to some of the interface circuitry and the LED lighting, 28v to the filament lamp lighting, and another 28v supply for the solenoids and motors.

It looks like there is an intermittent connection somewhere on your 28v solenoid/motor supply.

Double check all connections to the power supply board on the back of the machine. If that doesn't work then if you can get the plastic cover off the power supply board, lightly tap each of the components on the board with the handle of an insulated screwdriver (while someone holds the shooter handle on) to see if the fault comes and goes. If it does, then you've probably got a cracked lead, or bad solder joint on that component.

I don't recognise the name of this machine so I can't give any advice on where the power supply board is connected or any voltages to check for on the connectors. If you can upload a photo of the front and back of the machine I'm sure that one of us here will be able to help you locate where to continue your investigations into this fault.

[Lddrizzt]

Yes pics of front and back would be most helpful.

[compirate]

Another question, how powerful a transformer does it have? Could be underpowered.