|Williams System 6, System 7, and System 9 Display Driver:
No Longer Produced
This Williams display driver C-8363 is one of the most commonly
used, but hardest to replace because of the obsolete High Voltage
I.C.s that are used to drive the 90V fluorescent displays. The
UDN7180 and UDN6184 are both obsolete and very difficult to find.
Once a replacement is found, there is a good chance that it will
not last long, since it is probably already 20 years old.
This board replaces the obsolete High voltage IC devices with
discrete components rated at 300V and higher to be sure it can
easily handle the 90V needed for the displays. All of the
components are readily available and are ordered new for the
production of this board to be sure it will be usable for another
20 years. Additionally, all the I.C.'s used are mounted using
machined pin sockets, for reliable connection, yet easy
replacement and trouble shooting.
Because of all the discrete components, the size of the board was
increased slightly, however the mounting holes and connector
placement is identical and should have no problem fitting into the
machines listed below:
This can also be made to fit other System 6 games, such a
Firepower, however it requires a ROM modification. More
information on this can be found at
pinball4you. Note: The above games listed do NOT
require any modification. Algar and Alien Poker used the
C-8363 System 7 Display Driver board.
Each board comes complete with the replacement board,
schematics, board layout drawings, and instructions.
Need Cables? I also have the 20 pin ribbon cables
available. Click HERE for
old Williams System 7 or System 9 C-8363 display driver board:
Kohout Enterprises System 7/9 Display Driver:
Display Driver mounted in Backbox:
Operating in a classic Black Knight machine!