Need Help: Pioneer "Super Nyx" HE error

[elmo366036]

I got this machine as a gift a few weeks ago and it seems to work well except it sounds an alarm and displays HE whenever it tries to payout. The hopper has coins in it and is not jammed.


Here is some additional information:

• Pioneer "Super Nyx"
• AsahiSieko CH-700c Hopper (8 pins)
• I can manually turn the wheel in the hopper with some difficulty and it dispenses coins.
• I notice that it is hard to turn the wheel with the motor attached. When I remove the motor the wheel is much easier to turn (i.e., I don't think the gearbox is an issue)
• The motor has some burn smell to it. I can manually turn it.
• I cleaned off the photo detector, but I don't know if it works
• I check the voltage at the power leads and it is 24v
• I think this machine has a coin dispense switch, but it doesn't seem to do anything
• However, one time, I toggled the coin dispense switch and the hopper started dispensing coins. I couldn't get to stop though, even by toggling that switch. When this was happening:
  
  • I could see all kinds of sparks inside the motor and could smell it running
  • Eventually the 8 amp fuse blew
  • I have not been able to recreate this since

I am hoping that someone can help me get this machine working properly. Right now, I have to reset it anytime the credits goes beyond 50 or it is put in payout mode and it tries to payout.

[elmo366036]

I posted this to the wrong form. Can the mods move it to the pachislo support tickets forum?

[rockston]

These hopper motors are gear motors so turning the hopper by hand meets some substantial resistance, however what bothers me are the sparks and the fact that the motor stayed on after you re-toggled the switch. I would start with removing the motor and checking the label for specs, then apply that voltage to the motor.

[elmo366036]

Thank you for the response!

I took a closer look at the motor and can report the following:

• There are very few markings on the motor. There is a sticker that has two sets of digits:
  
  • RS-755SH
  • 88667620 (the first two 8's are hard to read and might be something else)
  • the motor is made in China
  
  
• There is a constant 24V across the terminals of the motor. This voltage doesn't seem to change when I toggle the coin dispense switch.
• There is a rubber knob at the back of the motor, by the terminals, that I can spin. When I do this the motor kicks on for a second or two and tries to spin. Sometimes it does, sometimes not. Either way. when it does this, there are lots of internal sparks and smoke. I am worried that this might start a fire so I have unplugged the hopper from the power supply.

Does this sound like the motor needs to be replaced? If so, any idea what kind I should replace it with?

And, this is a pachislo machine (I put this thread in the wrong forum).

[rockston]

Sounds like you have two problems, the switch that cuts the power to the hopper must be faulty and now the motor is cooked. You probably should look for a new hopper on ebay, how about a pic or two of the hopper. Thanks

[elmo366036]

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[elmo366036]

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[Moparformances]

looks like your getting good help

wanted to say

Welcome to Pachitalk

[MrGneiss]

WELCOME!!!

[rockston]

That particular model is not as common as say a Babel or Continental XXXX so finding a replacement is likely to be extremely difficult. Unless. Your other option is retro fitting another manufacturers hopper motor into that hopper. They usually all work on 24vdc near the same RPM . Adspting the mount, shaft legth and diameter and other factors will be what you may have to solve. Ebay time.

[rockston]

Also, reset the machine and see if you still have 24volts at the motor.

[takethecastle57]

[elmo366036]

I reset the machine but still see 24 V at the motor.

I found a similar hopper on ebay (AsahiSieko CH-950-Y) that hopefully I can cannibalize for parts. It looks similar to the one I have and has an RS-755SH motor, but I don't know what kind of shaft it has. We'll see when it arrives.

I also found the same power supply so I went ahead and bought it. Maybe the coin dispensing switch will work on this one.

Lastly, I reached out to AsahiSieko to see if they have any ideas for me.

[rockston]

Nice, good luck with the parts.

[elmo366036]

Fixed!!!


I was able to repair the hopper and get it back into working order.

There were two problems with the hopper:

• the motor was mostly burned out
• the brake circuit board on the hopper was damaged (DCMB 9101A)

I'll provide some details. The hopper that came with the machine was an Asahi Sieko CH-700c. I wasn't able to find any information about this specific hopper, but I found a similiar one on Ebay for sale.. That hopper was described as a "CH-950-Y"; however, what was shipped to me was a CH-700sb. This hopper is very similar to the one I have, the only difference being the connector type (7 pins inline rather than 8 pins in a 4x2 configuration).

I took the motor off the donor hopper (the CH-700sb), installed onto my hopper (the CH-700c), and installed the hopper back into the machine. At this point, the motor would run continuously and there was no way I could shut it off.

Since I had also bought a power supply off ebay, I decided to try it and see if there was something wrong with the coin dispensing switch. Unfortunately, even though the power supply I bought is for an older Pioneer machine (like what I have), the hopper connection is different (only had 6 pins). I couldn't use it, but I could compare the behavior of the coin dispensing switches by using a continuity meter and validating that they both behaved in the same way. They did. This suggested that the switch wasn't the issue.

So, I went back to the hopper to see what else could be an issue and I remembered reading about a circuit board which on these hoppers is located inside a white housing. I swapped out the circuit boards and the machine worked properly.

I took a closer look at the circuit board from my hopper and noticed that the power transistor (Tr1) is burnt and cracked. My guess is that it is shorted and provides a constant voltage to the motor. This constant voltage burned up the motor.

I looked up the board and found that it is a DC motor brake. From an Asahi Sieko technical manual I was able to find on the internet: "The DCMB-9101A is a brake circuit board which stops DC motors instantaneously by applying a short pulse of reverse current. Electrical connection is by two AMP E1 series connectors."