Vector The Black And White Monitor Faq And Guide

Black & White Vector Monitor Guide  
Page 11 of 51 The x-gain and y-gain will have to be adjusted a little on the B&W board to make the picture the 
right size. Connect the Z out from the game to only the Green and Blue inputs of the color monitor 
if it is behind smoked Plexiglas for a realistic “monochrome” look.” 
 
In fact, this is exactly what Atari did with their PAT 9000 test fixture to allow both monochrome 
and color vector games to be tested on one color monitor. 
 
 
 
Manual differences...

Black & White Vector Monitor Guide  
Page 12 of 51 Issue 2 manual has a revised deflection board parts list noting the following: 
· C602 and C603 removed (although these parts are still on the PCB layout) 
· C702 and C703 removed (although these parts are still on the PCB layout) 
· R100 and R101 removed (although these parts are still on the PCB layout) 
· R604 is changed to 910R  (910-Ohms) 
· R704 is changed to 820R  (820-Ohms) 
· D604 and D605 changed to 1N100 
· D704 and D705 changed to 1N100 
·...

Black & White Vector Monitor Guide  
Page 13 of 51  HIGH VOLTAGE BOARD  
 
It is reported that the weakest part of these monitors is the EHT or High Voltage Unit. This may be 
because the secondary windings tend to open up or arc due to poor mechanical connections. 
 
The first condition will cause no picture WITH high voltage depending on which secondary opens. 
The second condition will cause “blooming” – a faded enlarged picture. 
 
G05-801 EHT Supply Issue - 5 
Part Number: 50-1410-01 G05-802/805 EHT...

Black & White Vector Monitor Guide  
Page 14 of 51 DEFLECTION BOARDS  
 
When working on your deflection board, it is very important to remove the input signal from the 
game board BEFORE removing power to the monitor. Failure to follow these instructions will 
result in severe phosphor burn to the picture tube, which cannot be repaired. 
 
In order to properly identify which G05/V2000 Deflection board you have, we first need to 
determine if yours has been modified to work with a 19” or 15” monitor...

Black & White Vector Monitor Guide  
Page 15 of 51  
 “Issue 4” Deflection Board: Issue 4 deflection boards seem to be almost identical to the later 
revisions. On Issue 4 deflection boards, pins 4 and 5 are electrically connected, but the wire that 
connects to pin 4 is purple, and it runs to the CRT neck socket where it terminates since there is no 
CRT pin that makes a connection to it. This deflection board looks like a normal one, but has a 
unique pinout of P100. Pins 4 and 5 are shorted to ground...

Black & White Vector Monitor Guide  
Page 16 of 51  
ISSUE 5 DEFLECTION PCB PINOUTS (P100) PIN DESCRIPTION 1 Z input .5V blanking 1.0V blacklevel 
4.0V full on 220-ohm impedance 2 Y input +/-7.5V 1K impedance 3 X input +/-10V 1K impedance 4 Power GND (center tap) 5 Y signal GND 6 X signal GND 7 30 VAC RMS 8 Z signal GND 9 6.3V AC heater input 10 30 VAC RMS 11 Power GND (center tap) 12 Heater GND  
 
“Issue 6” Deflection Board: 
 
Issue 6 Deflection boards are almost identical to Issue 5 boards and they...

Black & White Vector Monitor Guide  
Page 17 of 51 R101 and R100 and (on early revisions of the board) jumper the pads with a length of heavy-gauge 
wire. Later revisions of the deflection board (Issue 5 and Issue 6) eliminated the resistors all 
together and had jumpers installed - labeled W10 and W11 (for R101); W8 and W9 (for R100) to 
provide a current path. Resistors R100 and R101 were eliminated from the schematics, although the 
PCB layout diagrams in the manuals show both the resistors and the...

Black & White Vector Monitor Guide  
Page 18 of 51  
X and Y Amplifiers 
 
If the top, bottom or sides of the display flutter and try to move toward the center, again, check the 
power supply. More often, though, this situation is due to a bad transistor in the “X” Amplifier 
(sides) or the “Y” Amplifier (top and bottom).  Sometimes these circuits will check good with an 
ohmmeter. 
 
So, if a team of engineers with sophisticated test equipment are not available, this is our suggestion: 
change Q707 and...

Black & White Vector Monitor Guide  
Page 19 of 51 we know it is a problem encountered frequently with the “X-Y” monitor and we want to bring it to 
your attention. 
 
 
Voltages 
 
For any of you who would like to try a little voltage measuring to analyze the problem, the 
following list contains EVERY Electrohome and Wells-Gardner “X-Y” monitor transistor voltage. 
These voltages were measured on correctly functioning monitors with a hand-held portable digital 
multimeter.  So, these readings are...

Black & White Vector Monitor Guide  
Page 20 of 51  
 
All Readings are DC Level Voltages                            X INPUT DC LEVEL FOR DIAMOND TEST PATTERN = -2.32 VOLTS DC 
Y INPUT DC LEVEL FOR DIAMOND TEST PATTERN = -0.08 VOLTS DC                            B = BASE E= EMITTER C = COLLECTOR                            ELECTROHOME G05 MONITOR  WELLS-GARDNER V2000 MONITOR                                          Q601 B -0.3  Q701 B -1.4  Q500 B -1.3    Q602 B -0.1 Q702 B -0.8 Q500 B -3.5  C -0.6  C...