Gottlieb Video System Boards
Last updated: November 27, 1996
* GV-100 Reactor uses a MA-289 board which looks very similar to the
GG-III system board with 2 noticeable exceptions, no battery & smaller
2732 type program roms near the edge connector (instead of the 2764's).
It should be possible to adapt this game to run on the GG-III system
GG-III system board are marked C-22248-3 and will run the following games...
* GV-102 Mad Planets
* GV-103 Q*bert
* GV-105 Krull test16, step 17
* GV-113 Three Stooges test -16, step 17
* GV-119 Q*bert's Qubes (I don't know if this fits the "system" or not)
* GV-134 Curveball (C-22248-2)
Some games use RAM (2128's) in place of BG roms & change the jumpers
* GV-109 MACH 3 is a 22399-1 board with a extra connector for the
additional controllers but it appears that it may be down graded to act
as the above boards
Gottlieb games that are not part of the System
* ?????? No Man's Land
* ?????? New York, New York
* GV-122 Juno First (Konami harness)
For JAMMA adaptor construction tips see the file at FTP wiretap.spies.com by
Rick Schieve. I might add that I believe a modern Poker board or Cherry
Master board uses the same larger (60 pin) edge connectors.
If anyone can help fill in any missing games or info please E-mail Me!
Soundboards used for the GG-III Video System.
Game A6 Sound or Piggyback Amp Voltage A3 Power
Reactor MA-216 Not Used +30 VDC MA-303
Q*bert MA-216 Not Used +30 VDC MA-303
production GV-103B MA-486 MA-483 +16 VDC MA-492
GV-103CT MA-486 MA-483 +16 VDC MA-492
Mad Planets MA-484 MA-483 +16 VDC MA-492
Krull MA-487 MA-483 +16 VDC MA-492
Three Stooges MA-495 ? +12 VDC MA-479
For replacement of the LM379S (U23) amplifier used on Gottlieb's Sound and
Sound/Speech Boards, a Piggyback Board Substitute been designed to replace
the amplifier. The new amplifier is mounted in a piggyback configuration
using a LM2002T or a TDA2002T which operate at approximately one half of the
voltage required by the LM379S.
This voltage requirement necessitates minor changes on the A3 and A7
Sound/Speech Power Supply Boards, because the 2002T cannot operate at the
+30VDC level supplied by the present Sound/Speech Power Supply Boards.
The new MA-481 and MA-492 Sound/Speech Power Supply Boards supply the
correct voltages to operate the piggyback amplifier.
A3 Power Supply Board Modification
To update an MA-303 or a MA-430, A3 Power Supply Board to the new MA-492
Board, please make the following changes to the circuit board.
* Delete C22 Capacitors, 2200 uF, 75V
* Delete R21 Resistor, 1.8K Ohm
* Replace D26 1N5363B, 30V Zener with 1N4745A Zener diode (16 V)
* Replace R23 200 Ohm Resistor with 1K Ohm, 5% Resistor.
A6 Sound or Sound Speech Board Mod
To repair a Sound or Sound/Speech Board requiring a replacement for a
defective LM379S, the new MA-483 Piggyback Board must be used. (Thus I
haven't bothered to document this but it demand dictates I will try to scan
in the pictures but I don't know where you will find a "piggyback" board).
This seems to be a pretty elusive game here on the net but we are getting
closer. Jess Askey has found a manual and provided me with a little info. I
am confident that we can hack the additional daughter board that was used
with little effort. Now to find the chips....
Now if we could find the "enhanced" Q*bert roms....
Oh, check out the Q*bert page that is pointed to on Nexus