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Gottlieb genie help. Only one credit

AlanJ

AlanJ

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5Years
Joined
Dec 27, 2017
Messages
8,249
Location
Leeds, West Yorkshire
My first Gottlieb. Game boots and plays and I’ve sorted a few issues out, but this one has me stumped:

Regardless of what dip switch settings I use. Both coin slots switches only clock up one credit. Once that one credit is on, you cannot clock up a 2nd, 3rd, etc. credit. If I start a game the credit goes to zero and p1 game starts I can then clock up 1 credit again, and then press start to start p2.

I’ve been trough all the dip switches and just cannot get it to accept more than one credit !

Any ideas please?
 
DIP 1-8=off (one coin, one credit).
DIP 9=on (three balls per game).
DIP 10=on (match feature on).
DIP 11=on (replay instead of extra ball).
DIP 12=on (tilt kills current ball only).
DIP 13=on (show number of credits).
DIP 14=on (play a tune when game started).
DIP 17,18=on (maximum credits 15).
DIP 20=on (chimes/tones when scoring).
DIP 21=on (show high score to date).
DIP 22=on (award 3 credits when high score beat).
DIP 23=on (play a tune when money inserted).
 
AlanJ said:
Dunno - got off board battery pack. I’ll check it.

I’ve been through all dips above and set them and checked them and tried all sorts of combinations of s1-8 and s19
Click to expand...
Pin 22 on the 5101. What voltage you seeing?
 
The duraleak batteries were a bit low so replaced them, now have decent 4.5v backup battery. No change.

Managed to get the self test button working - wires were cut and re-connected to the coin door, but one pair were wired wrongly, resulting in no self test button. I corrected these issues and the self test
button now works. Noting is being saved into the RAM though. So I guess my issue is with the ram chip Z22?

I don't have a schematic for the sys 1 MPU board - I've got the genie manual but it only has the sound board schematic Grrrrrrr.

Also found this from 20 years ago:

TECH: Gottlieb system 1 can only add 1 credit

rec.games.pinball.narkive.com rec.games.pinball.narkive.com
 
Done a ton of tests - concluded that the Z22 PC5101 RAM chip is duff. It is getting its control signals Read/Write and Enable Ok, also it's address data lines are being set (assume correctly), but no data can be read or written.

I'll order a new one and swap it in.

In the meantime I have put in a freeplay mod, so when the credit button is pressed it adds a new credit. This will suffice for now.
 
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Old Gottliebs like this are a niche market. Very few folk in the UK know how to fix them. My Genie did all sorts of weird sh1t on the original boards.

The original connectors are horrible and it's probable that the contact points on the boards are perished/ damaged as well.

I just accepted defeat. I repinned every connector and bought the Pascal all-in-one. It was faultless after that.

Good luck
 
I can see why the pascal boards are handy. Hopefully u can repair this original mpu board though, but if not at least I’ve got that as an alternative.

How does th ex wiring color coding work. It seems most wires have 3 digit could code so eg, orange, brown, brown . Is that correct?
 
AlanJ said:
How does th ex wiring color coding work. It seems most wires have 3 digit could code so eg, orange, brown, brown . Is that correct?
Click to expand...

Correct, the manual normally lists the colours for each wire.

Taken from Haunted House manual as it's next to me.
0 - Black
1 - Brown
2 - Red
3 - Orange
4 - Yellow
5 - Green
6 - Blue
7 - Purple
8 - Slate (American term for Grey)
9 - White

The wiring diagrams have a rectangle box with 3 numbers inside it to indicate the wire code.

Eg for connector A10J6 (Feeds main playfield display)
pin 1 - 5V AC - code is 122 (Brown, Red, Red)
pin 2 - 5V AC return - code is 144 (Brown, Yellow, Yellow)
pin 3 - +60V DC - code is 044 (Black, Yellow, Yellow)
pin 4 - GND (normally either all Dark Green or White depending on age of the machine not sure when they changed from one to the other)
 
I think you need to get them done in a batch of 5 minimum when ordering the PCBs.

Currently looking into get some of the Williams FPGA and Bally FPGA ones built once I have the funds, so have had a look at the process. Already got a few of the FPGA boards and the USB blaster from AliExpress.
 
Fantazia2 said:
I think you need to get them done in a batch of 5 minimum when ordering the PCBs.

Currently looking into get some of the Williams FPGA and Bally FPGA ones built once I have the funds, so have had a look at the process. Already got a few of the FPGA boards and the USB blaster from AliExpress.
Click to expand...

I got 5 of the soundcard for black hole. So I understand the process, maybe I'll look into it but I don't really need any🤣
 
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