Service manual

Wells-Garnder Color Vector Monitor Guide
Page 2 of 73
INTRODUCTION
Note: Very little, if any, of this document is my own work. Information in this document has
been taken from official factory manuals, technical updates, practical experience by others, etc.
In many instances I have paraphrased or omitted information from the original documents for
readability and/or clarity purposes. I thought it would be helpful, not only to myself, but to others
having trouble with their color vector monitors.
Please read through this entire document before working on your malfunctioning monitor, and
make sure you have a set of schematics on-hand. Also, in order to properly test your vector
monitor, it is imperative that you have a known-working game board and power supply to
provide a good input signal to the monitor. A bad game board and not the monitor can actually
cause some of the symptoms of a ‘bad’ monitor.
DISCLAIMER
CAUTION!!! LETHAL VOLTAGES ARE PRESENT IN ARCADE MONITORS.
SUITABLE PRECAUTIONS SHOULD BE TAKEN BEFORE ATTEMPTING TO
SERVICE YOUR MONITOR. REMEMBER, NO WARRANTIES, EXPRESS OR
IMPLIED, ARE GIVEN. USE THIS INFORMATION AT YOUR OWN RISK. I AM
NOT RESPONSIBLE FOR ANY DAMAGES THAT MAY OCCUR TO YOUR PERSON
OR PROPERTY.
Acknowledgements
This document is based on an original text by Rick Schieve. Additional information was
compiled by Gregg Woodcock from numerous sources on both the Internet and from StarTech
Journal, Play Meter magazine and factory manuals. In many instances I have copied text
verbatim from the document Gregg Woodcock compiled.
The following people have also contributed to the development of this document (knowingly or
otherwise): Roger Boots, Mark Davidson, Mike Haaland, Mark Jenison, Al Kossow, Noel
Johnson, Matt McCullar, Zonn Moore, Phil Morris, Bret Pehrson, Jon Raiford, John Robertson,
Matt Rossiter, Mark Spaeth, James Sweet, Andy Warren and Andy Welburn (let me know if you
want to see your name here – or don’t want to!)