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  #1  
Old 09-11-2011, 09:24 PM
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Unhappy Gottlieb System 1 Problems

Hi, I'm very much a novice at this but am the proud owner of a Gottlieb Roller Disco machine that I can't seem to get to work. I just installed a Ni-Wumpf CPU and a Rottendog GDB001 Controller board. I still have the original boards but both have what looks like Kludges and Burnt bits. Right now, I am looking for the sign that says "Bang Head Here." Here is what the machine is doing: On switch on, the backglass lighting turns on. The 4 displays are blank, then flash 349000, then the outhole kicker fires and returns, then the displays alternate between showing 0 and then 320000. None of the field lights come on except the "Same Player Shoots Again," Lamp. Other than that light, the playfield is all off. There is also no sound coming from the sound card either. The machine is missing the knocker solinoid and there are two wires for the knocker that are not connected to anything. (Is this the cause of my grief?)

Checked all of the wire connectors and they seem to be clean and still springy. Double checked that all of the connectors are plugged into the right boards and slots. Since I work for a power supply company, I had the techs replace all of the caps and verify that the voltages are all per the schematic specs on the power supply.

I think the machine is trying to tell me what the problem is but I can't find any trouble shooting codes for the Ni Wumpf or Rottendog controller cards. (I'm wondering if they play nice together or hate each other because of competition?)

Any help from one of you seasoned veterans at this would be gratefully accepted.

Simi Karl
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Old 09-12-2011, 11:11 PM
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Does the Ni-Wumpf CPU led flash at all when you turn it on??
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Old 09-13-2011, 11:16 AM
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The Ni-Wumpf LED flashes just once when you push the reset button on the CPU board. The Red LED on the Rottendog controller card is always on.
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Old 09-13-2011, 11:19 PM
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Quote:
Originally Posted by Simi Karl View Post
The Ni-Wumpf LED flashes just once when you push the reset button on the CPU board. The Red LED on the Rottendog controller card is always on.
It could be a bad Ni-Wumpf. O.K. so the light flashes once when you press the reset button. How about when you first turn it on. Have you tried going into the diagnosic and setup menu suing the button on the coin door?
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Old 09-13-2011, 11:39 PM
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Bad Ni-Wumpf? It's brand new but I was thinking the same. The LED quickly flashes when you turn the machine on. Have pushed the door button lots of times but no change in any of the 5 displays. (4 player displays and Match Number/Credits). I even held it down for 20 seconds. No change. I tried disconnecting the power cable between the Ni-Wumpf and the Rottendog driver board the result being 320000 being flashed on all 4 of the player displays. I'm a bit discouraged. Any thing else I should check? Thank you very much for your time.
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Old 09-14-2011, 08:00 AM
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Now many times does it flash when you first turn it on?
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Old 09-14-2011, 01:01 PM
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Just one quick flash. The only other way to get it to flash is to push the reset button on the Ni-Wumpf board. Is there any significance to the numbers that flash on the 4 player displays? As mentioned when connected to the driver board, the first set of numbers is 3490000. After the outhole kicker fires it flashes between 0 and 320000. When not connected, it alternates between 0 and 320000.
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Old 09-18-2011, 06:20 PM
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Default Update Info

In an update to the saga on my System 1 Roller Disco Challenge, I took some advice from an e-mail and went through the main power cable between the CPU and the Driver board. Everything was cleaned, tested and confirmed conductive. In the e-mail I was told to check the tilt and game over relays to see if they were stuck in the wrong positions. Neither seemed to be stuck and when I moved them to verify that the solinoids were working, nothing seemed amiss. I turned the machine on and blew the 10 amp slow blow fuse which is for the playfield lighting. I'm way over my head at this point. What could have caused the playfield fuse to blow? Any help with the original problem and now this would be helpful.

Thanks
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  #9  
Old 09-19-2011, 06:03 PM
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Hi Lucretia695. The inserts don't show up on your post. Any ideas or suggestions are greatly appreciated.
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Old 10-11-2011, 11:02 AM
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Karl - Not sure if you found your issue or not, but I just got the same board for a 1978 Gottlieb - Sinbad. My card was doing the EXACT same thing yours was. I contacted the manufacturer and yes, the board is having an issue. Here is what the manufacturer told me to check: Yes, it does sound like the issue that we have seen with a bad batch of Intel chips. These are the U15 chips that have a date code of: L0015642

I am sending in my chip today to get it replaced.... I am crossing my fingers. Good luck to you, I hope this helps...

Mike
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Old 10-11-2011, 09:00 PM
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Question

Quote:
Originally Posted by mkoehn23 View Post
Karl - Not sure if you found your issue or not, but I just got the same board for a 1978 Gottlieb - Sinbad. My card was doing the EXACT same thing yours was. I contacted the manufacturer and yes, the board is having an issue. Here is what the manufacturer told me to check: Yes, it does sound like the issue that we have seen with a bad batch of Intel chips. These are the U15 chips that have a date code of: L0015642

I am sending in my chip today to get it replaced.... I am crossing my fingers. Good luck to you, I hope this helps...

Mike

Helpful information. I assume you are talking about the Ni-Wumph MPU board and not the Rottendog Driver board?
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Old 10-27-2011, 11:55 AM
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Default Confirmed Chip issue with Ni Wumpf

After speaking with Ace Ni-Wumpf and going over one of the problems the game was having, he confirmed that the issue of the game freezing up during play is related to a bad chip. David agreed to take the CPU the Rottendog board and do some testing to see if my other issue with the Tilt relay coming on immediately during boot up. He will do this after replacing the bad chip. Major Thanks to Ni-Wumpf for his help.
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Old 10-29-2011, 11:14 AM
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Default system 1 problem

I just installed a ni wumpf mpu board and the game plays ok for a ball or 2 then it freezes up.The manual i received with the new board say something about a voltage problem.Can anyone help
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Old 11-01-2011, 03:10 PM
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Default Sounds like the processor chip problem

Quote:
Originally Posted by jimyjude View Post
I just installed a ni wumpf mpu board and the game plays ok for a ball or 2 then it freezes up.The manual i received with the new board say something about a voltage problem.Can anyone help
Hey Jimyjude, I think if it was a voltage problem, you would have the issue when booting up. I would strongly encourage you to contact Ni-Wumpf to see if your CPU board has the chip series that is defective. He got a bad batch of microprocessors and is replacing them. He has my board right now and is replacing the chip. Give him a call. He's a really nice guy and very helpful. His contact information is on his webpage.

Hope this helps.
Karl
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  #15  
Old 12-16-2011, 09:24 PM
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The Roller Disco Machine is up and making lots of people happy. Just a final update to those that have issues resurrecting a Gottlieb System One Game. These are the things I have learned:
1. Ni-Wumpf makes a fantastic CPU board and I highly recommend switching to it if you have a Gottlieb System 1 CPU that is not working correctly. Rottendog Makes a superb driver board, but... Sometimes a Ni-Wumpf CPU will not work with a Rottendog Driver board. I got my machine to finally work by repairing the Gottlieb Driver board and have it working with the Ni-Wumpf CPU.
2. Ace from Ni-Wumpf is patient, extremely generous with his time and advice and without his help, I could not get my Roller Disco Machine to come alive. Major Thanks!
3. Jim from Rottendog is a true Gentleman and really is a nice guy! After a little back and forth, I returned the Rottendog driver board and was refunded the complete amount. You will never go wrong doing business with Rottendog. They stand behind their products and as long as there are no comparability issues your getting top notch electronics. Major thanks to Jim.
4. Keith from K's Arcade is also someone you can trust. My sound card went sideways and because of the unobtainable chips, I thought my machine was going to speak French. Keith repaired my board and also gave fantastic advice on how to sort out the problems with getting the sound to work. Major Thank You to Keith.
5. If you are having issues, Don't try and Kludge something. Seek the smartest guys you can find (The manufacturers of the replacement parts) and LISTEN TO THEIR ADVICE!!! They know what they are talking about.

Roller Disco is happening in Simi! Kids love it, Parents love it and I love watching them play. Thank you to all who gave sage advice!! SPALMER parting thanks to you!! Great advice and help!!

Simi Karl
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