Wells-Gardner Vector Monitor 6100 Faq And Guide Version

Page 1 of 75 Wells-Gardner 6100 Vector Monitor FAQ and Guide 
Version 1.0 
March 1, 2002 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents 
 
INTRODUCTION................................................................................................................2 
HOW DOES A VECTOR MONITOR WORK?...................................................3 
INSTALLING A CAP KIT............................................................................................13 
DIAGNOSING YOUR WELLS-GARDNER...

Wells-Garnder Color Vector Monitor Guide Page 2 of 75 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....

Wells-Garnder Color Vector Monitor Guide Page 3 of 75 HOW DOES A VECTOR MONITOR WORK?  
Vector monitors, also referred to by Atari and others as XY or Quadrascan monitors, are 
available in black & white or color. A black & white picture tube has one electron gun that lights 
just one type of phosphor (usually, but not always, white). Color tubes have 3 electron guns that, 
when the yoke and neck magnets are aligned properly, each hit their own phosphors only, either 
red, green, or blue (RGB). Something...

Wells-Garnder Color Vector Monitor Guide Page 4 of 75 Multiple intensities are achieved by selectively reducing the output power of the Z amplifier(s). 
The lower power output, the brighter the screen illumination. 
 
The first black & white vector hardware (Lunar Lander, Asteroids, etc.) allowed the game 
companies like Atari to produce high-resolution 768 by 1024 images. This was in the late 1970s 
when the gaming industry was just moving over to color monitors. Dave Theurer programmed 
the first color...

Wells-Garnder Color Vector Monitor Guide Page 5 of 75 meant to keep your picture tube and other components (such as the high voltage transformer) 
from being destroyed in the event of a failure involving very large high-voltages. 
 
A detailed Theory of Operation for the Wells-Gardner 19K6100 monitor is included here in 
Appendix C. 
 
 
How Do Wells-Gardner and Amplifone Differ?  
While this document will deal specifically with the Wells-Gardner 19K6100, it is important to 
note that Atari used two...

Wells-Garnder Color Vector Monitor Guide Page 6 of 75 The Amplifone uses a neck socket that is the same as most other (non-vector) monitors, but the 
Wells-Gardner uses a different socket. 
 
The Wells-Gardner 6100 series uses a 100-degree RCA picture tube (19VLUP22) while the 
Amplifone uses a 90-degree medium resolution Rauland tube (M48AAWOOX). 
 
It is pretty easy to check to see if your tube is bad (it does not happen often, but it does happen). 
Pins on the tube neck are counted counter-clockwise...

Wells-Garnder Color Vector Monitor Guide Page 7 of 75 Manuals 
 
Some words of caution about the Atari manuals. There are three versions of TM-183. If you are 
lucky enough to have a copy of the Wells-Gardner service manual for this monitor (as opposed 
to the Atari manuals), the parts list on page 31 has an error; it lists C916 as 0.35uF when it is 
really 0.035uF. It is labeled properly in the schematic on page 28. None of the manuals show all 
the different versions of this monitor. 
 
The following...

Wells-Garnder Color Vector Monitor Guide Page 8 of 75 Type-1N4001 Diode (D104-107, 602, 702).  
· Type-2N3904 NPN Transistor (Q804) added.  
· 10K Ohm, +/-5%, ¼ W Resistor (R812, 813) added.  
· ...2W Resistor (R106) changed to ...3W Resistor (R106).  
· 5-Amp ... (F100, F101) changed to 6.25 Amp ... (F100, F101).  
· 18K Ohm, +/-5%, ¼ W Resistor (R811) added.  
· 30K Ohm, +/-5%, ¼ W Resistor (R810) added.  
· Germanium-Special Diode (D807, 808) added.  
 
 
Monitor Board Revisions 
 
There are several...

Wells-Garnder Color Vector Monitor Guide Page 9 of 75 If you have a P314 deflection board, in addition to the changes listed above, you should upgrade 
the following parts: 
 
Differences between P314 and P327 (P339) deflection boards:  
· Input Protection Circuit added (see additional text later on). 
· R106 (22 +/-10%) changed from 2W to 3W. 
· Q101 (PNP) changed from Type MPSA56 (TO-92) to NTE50 (TO-202). (*) 
· F100, 101 (Slow-Blow) changed from 5A to 6.25A. 
 
(*) The Zanen Get Well Kit uses the...

Wells-Garnder Color Vector Monitor Guide Page 10 of 75 +-------+--------------------------------+-------------------------------+ 
|*C902  | 100uF @  50V Alum Electrolytic | P329 HV unit PCB              | 
| C902  | 100uF @  35V Alum Electrolytic | P315 HV unit PCB              | 
| C902  | 100uF @  50V                   | TM-183 3rd printing Schematic | 
| C902  | 100uF @  35V                   | TM-183 2nd printing Schematic | 
| C902  | < part is not referenced >     | 19K6400 service man Schematic |...