corkgiants
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Reviews - Advice Replacement Williams D-8224 Sound Board by Kohout Enterprise
Does anyone have any feedback or advice on this replacement board?
I appreciate anything you could tell me. Has anyone else bought one and had any problems with the board or with this company?
Much appreciated. Jim
This is a drop in replacement for the Williams D-8224 Sound Board. Same as all the
other Kohout Enterprises boards, it uses new components (when available), and replaces any obsolete components to keep your machine running for another 20 years. It is particularly important on this board because of the large capacitors used for the power supply and the amplifier section, which do not age well, causing poor performance, such as bad humming. Capacitor technology has also improved greatly since 1980, as can be seen on this board. The same value capacitors require about half the room of the original, leaving extra space for larger heatsinks to keep the regulator and amplifier running cooler.
This sound board was used in a variety of Williams pinball machines as well as some arcade games. Unlike the original Williams board, the jumpers are clearly labeled and easily changed without soldering, so anyone set up the board for their application with little work. This board is built on a 0.094" board instead of the typical 0.063" board. This makes a HUGE difference in the rigidity of the board. You can feel a difference just holding the replacement board and it makes a BIG difference when installing while removing or installing the connectors as it grealty reduces the chance for stress cracks.
System 6 or System 7 With Speech:
Black Knight
Gorgar
Blackout
Firepower
Firepower II
Jungle Lord
Pharoah
Alien Poker
System 6 or System 7 without Speech:
Defender
Solar Fire
Barracora
Hyperball
Stargate
Cosmic Gunfight
Varkon
Time Fantasy
Algar
Shuffle Bowlers
Big Strike
Video Games:
Defender
Sinistar
Robotron
Joust
Bubbles
Warlok
This board comes supplied with a EEPROM and configured for the game of your choice from the list above, so be sure to provide the correct machine machine when ordering. This EEPROM will be one of the few I.C.s on the board that will not be new, along with the Motorola 6802 Microproccesor and Motorola 6821 PIA. Changing these would require a code conversion and specialized EEPROM. As a result, these three devices may not be "new" devices, however they are readily available from multiple sources.
Each board comes complete with the replacement board, schematics, board layout drawings, and
instructions.
The Old Williams D-8224 Sound Board:
The New Kohout Enterprises System 6/7 Sound Board:
Notice the larger heatsinks and jumper settings printed directly on the board for easy setup and configuration:
The extra thick board compared to the original:
The new Kohout Enterprises System 6/7 Sound Board mounted in the backbox with original Williams speech module:
Does anyone have any feedback or advice on this replacement board?
I appreciate anything you could tell me. Has anyone else bought one and had any problems with the board or with this company?
Much appreciated. Jim
This is a drop in replacement for the Williams D-8224 Sound Board. Same as all the
other Kohout Enterprises boards, it uses new components (when available), and replaces any obsolete components to keep your machine running for another 20 years. It is particularly important on this board because of the large capacitors used for the power supply and the amplifier section, which do not age well, causing poor performance, such as bad humming. Capacitor technology has also improved greatly since 1980, as can be seen on this board. The same value capacitors require about half the room of the original, leaving extra space for larger heatsinks to keep the regulator and amplifier running cooler.
This sound board was used in a variety of Williams pinball machines as well as some arcade games. Unlike the original Williams board, the jumpers are clearly labeled and easily changed without soldering, so anyone set up the board for their application with little work. This board is built on a 0.094" board instead of the typical 0.063" board. This makes a HUGE difference in the rigidity of the board. You can feel a difference just holding the replacement board and it makes a BIG difference when installing while removing or installing the connectors as it grealty reduces the chance for stress cracks.
System 6 or System 7 With Speech:
Black Knight
Gorgar
Blackout
Firepower
Firepower II
Jungle Lord
Pharoah
Alien Poker
System 6 or System 7 without Speech:
Defender
Solar Fire
Barracora
Hyperball
Stargate
Cosmic Gunfight
Varkon
Time Fantasy
Algar
Shuffle Bowlers
Big Strike
Video Games:
Defender
Sinistar
Robotron
Joust
Bubbles
Warlok
This board comes supplied with a EEPROM and configured for the game of your choice from the list above, so be sure to provide the correct machine machine when ordering. This EEPROM will be one of the few I.C.s on the board that will not be new, along with the Motorola 6802 Microproccesor and Motorola 6821 PIA. Changing these would require a code conversion and specialized EEPROM. As a result, these three devices may not be "new" devices, however they are readily available from multiple sources.
Each board comes complete with the replacement board, schematics, board layout drawings, and
instructions.
The Old Williams D-8224 Sound Board:
The New Kohout Enterprises System 6/7 Sound Board:
Notice the larger heatsinks and jumper settings printed directly on the board for easy setup and configuration:
The extra thick board compared to the original:
The new Kohout Enterprises System 6/7 Sound Board mounted in the backbox with original Williams speech module:
