(Topic ID: 73213)

Home for the Gottlieb SYS1-SYS80B guys, Yep it's a club :)

By Gerry

5 years ago

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  • 411 Pinsiders participating
  • Latest reply 4 minutes ago by BorgDog
  • Topic is favorited by 214 Pinsiders


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#2211 1 year ago
Quoted from JodyG:

I have a system 80B display that is showing some ghosting of the display segments not in use. It appears the be the display itself, as it follows the display to other games. I did replace the small capacitors on the display board, because they were testing questionable... But that did it fix it. Any ideas?


Yes, we have already seen this on one of the displays that we repaired. This comes from the display board itself.
The problem came from 10941 (the small chip) which had too much latency, and the solution was to replace it.

Check anyway before changing it that there is no short circuit, or dirt on the PCB, especially at the SCLK-DIS and DATA-LOAD pins (1 and 40 of the 10939, and 23- 24 of 10941). If necessary, clean the welding side with acetone and alcohol. If it does not improve anything, then the 10941 is faulty.
Finding spare 10941 (R10941 from Rockwell, or MIC10941 from Micrell) is now quite difficult, and prices go hand in hand.

#2226 1 year ago
Quoted from Andreas:

Where do one get one of these?

Late reply, but looking at this picture, I thought that it reminded me of something... it was in France, of course

This picture has been taken during the Flip-Expo show 2018 at Le Tréport
I first recognized the engine on the table! But, I also remember that this pretty girl was on our common stand (flipper.fr / flipprojets). I think it was Fabrice (Danny60) who brought her, but I do not know how he got it. On occasion I will ask him for more details.
Some pictures of this show (and the stand where it was displayed) are visible at Pinballnews : https://www.pinballnews.com/site/2018/04/24/flip-expo-2018/
2018-07-18_12h02_46 (resized).png

2 months later
#2453 1 year ago

Would anyone in the room have a CHICAGO CUBS in French, or German?

Usually, we see it when we go to the TEST menu and the texts are in French/German.

1 month later
#2556 10 months ago
Quoted from toddharper:

… Works great except for the light on the 13 ball on the playfield. ...

On Pinball Pool, the 13 ball light is the controled lamp #28 and depend of the state of the drop target #70.
2018-12-05_09h51_44 (resized).png
As the drop target is detected, the issue is more on the lamps circuit than in the switch matrix.
So, the problem should come from the lamp #28 command:
2018-12-05_09h42_11 (resized).png

On SYSTEM-1, the controled lamp circuit is simple : all lamps have a common pin connected to the +6 V DC (switched by the tilt relay), and the other pin is driven to the ground by the driver board. A transistor drive the pin to the ground. The lamp #28 is controled by the Z7 chip (74175) and Q36 transistor (MPS-A13):
2018-12-05_09h39_44 (resized).png

The easiest way to check if the issue comes from the driver board, is to exchange it with another one.
Most probably, your driver board need to be repaired.

As the behaviour of the lamp #28 is inverted, it is less probable than Q36 is deffective, but more an issue on Z7.
But, check if the Q36 transistor has been replaced… may be someone has mounted a wrong reference ! must be a MPS-A13.

8 months later
#3117 63 days ago
Quoted from Andreas:

On timeline there is a bell inthe game..really awsome. Did they put this in any other sys 80 games?

On Rocky #672 you have a GONG ! Located at right side of the cabinet, it's a 5" bell. Reference of this "sound board" is MA-352
Fun to see the use of this electromechanical piece, as this 1982's model has also a sound board with speech (with SC-01).

1 week later
#3122 56 days ago
Quoted from PinballAir:

I had a party last night and 4 score displays on volcano went out, then came back, then out. They would drop out from 15 to 30 minutes.
Only score displays go out. Credit display is still on.
Left it on for 1 hour today, and they are out again.
All ground mods are done and it has been repinned .
Any ideas?

According to these symptoms, it can only come from a defect of the 60V. The first thing to do is to check when the displays go off, that the 60 volts still arrives on the display blocks. Simply measure with a DMM on the chemical capacitor, on the right of the 7-digit display blocks (it has the 60V at his pins, and easy access). If no voltage is present, then sure the issue is here.
It will then be necessary to look for, why the 60 volts no longer reaches the displays. There is a good chance that this is a connector problem (broken weld) at the power supply board. Overall, the power supply board must work and produce 60 volts, because the 42 volts used by the small 4-digit display, is derived from this voltage.
Since the cut is intermittent and occurs when the power supply is hot, there is certainly a bad weld under the power supply board, maybe at the connector. Thus, with heat and expansion, the contact can fluctuate.
If you do not have skill for electronics, you can try exchanging the power supply with another to see if the phenomenon continues to happen or not.

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