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Page 1 of 73 Wells-Gardner 6100 Vector Monitor FAQ and Guide Version 1.1 June 13, 2002 Table of Contents INTRODUCTION ...

Wells-Garnder Color Vector Monitor Guide Page 10 of 73 +-------+--------------------------------+-------------------------------+ |*C902 | 100uF @ 5

Wells-Garnder Color Vector Monitor Guide Page 11 of 73 +-------+--------------------------------+-------------------------------+ |*R907 | 3.9 +/- 5

Wells-Garnder Color Vector Monitor Guide Page 12 of 73 If you feel uncomfortable about poking around inside a running game cabinet, or you cannot reac

Wells-Garnder Color Vector Monitor Guide Page 13 of 73 DIAGNOSING YOUR WELLS-GARDNER MONITOR All the documentation and boards for the Wells-Gardner

Wells-Garnder Color Vector Monitor Guide Page 14 of 73 You may want to leave the game plugged in BUT TURNED OFF for this step so that you can ground

Wells-Garnder Color Vector Monitor Guide Page 15 of 73 This gives reference frames for when the monitor is mounted horizontally (for games like Space

Wells-Garnder Color Vector Monitor Guide Page 16 of 73 These transistors often go bad and here is a quick lesson on how to check a transistor with a m

Wells-Garnder Color Vector Monitor Guide Page 17 of 73 Deflection Board On the deflection board, the most common failures are Q100 and Q101 and when

Wells-Garnder Color Vector Monitor Guide Page 18 of 73 Neck Board The neck board very seldom has problems. Occasional faults will be caused from mish

Wells-Garnder Color Vector Monitor Guide Page 19 of 73 TEMPEST DISPLAY TROUBLESHOOTING (FLOWCHART) The following flowchart is excerpted from the St

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 do

Wells-Garnder Color Vector Monitor Guide Page 20 of 73 CAUTION: When replacing the transistors mounted on the chassis, make sure the pins do not short

Wells-Garnder Color Vector Monitor Guide Page 21 of 73 Symptom: Spot Killer ON and display dead Check the fuses first. If they are OK, then check th

Wells-Garnder Color Vector Monitor Guide Page 22 of 73 temperature (and the resistors heat) caused the resistor lead to separate in the hole on the bo

Wells-Garnder Color Vector Monitor Guide Page 23 of 73 Symptom: Display bad only in lower right quadrant Distorted image, which exists ONLY in the l

Wells-Garnder Color Vector Monitor Guide Page 24 of 73 NECK (CRT) BOARD PROBLEMS Symptom: Colors Drop In and Out (ZD500 open on neck board) or Disp

Wells-Garnder Color Vector Monitor Guide Page 25 of 73 Symptom: No Green On neck board: • R503 (open) • R513 (wrong value) • R520 (wrong value

Wells-Garnder Color Vector Monitor Guide Page 26 of 73 Symptom: Green Does Not Turn Off When Dimmed All The Way On neck board: • R512 (shorted to

Wells-Garnder Color Vector Monitor Guide Page 27 of 73 HIGH VOLTAGE BOARD PROBLEMS Symptom: Display Unstable The image is extremely shaky and unst

Wells-Garnder Color Vector Monitor Guide Page 28 of 73 Symptom: Top of Q901 Blowing Off • R902 (open) • Q900 (inserted or wired wrong; if emitter

Wells-Garnder Color Vector Monitor Guide Page 29 of 73 Symptom: R908 Smokes • Q900 (white and black leads interchanged) Symptom: R912 Smokes •

Wells-Garnder Color Vector Monitor Guide Page 3 of 73 HOW DOES A VECTOR MONITOR WORK? Vector monitors, also referred to by Atari and others as "

Wells-Garnder Color Vector Monitor Guide Page 30 of 73 Symptom: Waveform At IC901 Outputs; If Missing, Check: • R914 and/or R927 (wrong value) •

Wells-Garnder Color Vector Monitor Guide Page 31 of 73 • Q905 (reversed or collector wire broken) • IC901 (defective, reversed, or unseated pins)

Wells-Garnder Color Vector Monitor Guide Page 32 of 73 Symptom: Blooming/"Weak" Brightness/Low HV Since most of you do not have a HV probe

Wells-Garnder Color Vector Monitor Guide Page 33 of 73 FINE-TUNING THE PICTURE Now that you have a working monitor (and game board), it is time to f

Wells-Garnder Color Vector Monitor Guide Page 34 of 73 Size and Position The manuals do not talk much about adjusting the size and positioning of yo

Wells-Garnder Color Vector Monitor Guide Page 35 of 73 • Adjust the "LIN" pots: Adjust the X-LINEAR (R169) and Y-LINEAR (R165) so that the

Wells-Garnder Color Vector Monitor Guide Page 36 of 73 ADJUSTMENT OF CONVERGENCE In most cases, you should never have to converge, or reconverge you

Wells-Garnder Color Vector Monitor Guide Page 37 of 73 COLOR PURITY (Figure 6; from sections of the Wells-Gardner Service Manual) As far as adjusti

Wells-Garnder Color Vector Monitor Guide Page 38 of 73 each other. Move the 2 purity ring magnets with respect to each other in order to center the gr

Wells-Garnder Color Vector Monitor Guide Page 39 of 73 IMPROVING YOUR WELLS-GARDNER 6100 MONITOR Now that you have your monitor repaired and adjuste

Wells-Garnder Color Vector Monitor Guide Page 4 of 73 Multiple intensities are achieved by selectively reducing the output power of the Z amplifier(s)

Wells-Garnder Color Vector Monitor Guide Page 40 of 73 Figure 6 - IN754A and 1N756A Zener-Diode Connections Solder Here

Wells-Garnder Color Vector Monitor Guide Page 41 of 73 Table 3 - Display Versions Version 1 Deflection PCB has two large, black, tubular capacitors,

Wells-Garnder Color Vector Monitor Guide Page 42 of 73 Version 2 Deflection Board Perform the following procedure for Version 2 of the Wells-Gardner

Wells-Garnder Color Vector Monitor Guide Page 43 of 73 THE INPUT PROTECTION CIRCUIT (IPC) This Modification is for P314 versions of the Deflection

Wells-Garnder Color Vector Monitor Guide Page 44 of 73 110001-222 2.2K Ohm, +/- 5% 1/2 W Resistor (R10) 110001-472 4.7K Ohm, +/- 5% 1/2 W Resistor (

Wells-Garnder Color Vector Monitor Guide Page 45 of 73 COLOR X-Y DISPLAY 92-053 INSTALLATION INSTRUCTIONS INPUT PROTECTION CIRCUIT PCB A038088-01 1

Wells-Garnder Color Vector Monitor Guide Page 46 of 73 INPUT PROTECTION CIRCUIT PCB (continued)

Wells-Garnder Color Vector Monitor Guide Page 47 of 73 How To Make A 'Tempest' Monitor Trouble-Free Here is an article from the April 15,

Wells-Garnder Color Vector Monitor Guide Page 48 of 73 FIRST HALF Take the anode ends (the ends opposite from the marked rings) of a 1N914 and a 1N4

Wells-Garnder Color Vector Monitor Guide Page 49 of 73 FINAL TWO-MINUTE WARNING Make sure that none of the wires of this modification can come into

Wells-Garnder Color Vector Monitor Guide Page 5 of 73 meant to keep your picture tube and other components (such as the high voltage transformer) from

Wells-Garnder Color Vector Monitor Guide Page 50 of 73 Appendix A: X-Y Monitor/Final Solution (sort of) WELLS GARDNER X-Y MONITOR/FINAL SOLUTION By

Wells-Garnder Color Vector Monitor Guide Page 51 of 73 2 - POWER SUPPLY CIRCUIT The Low Voltage Power Supply is to be bypassed in this modification.

Wells-Garnder Color Vector Monitor Guide Page 52 of 73 3 - X CHANNEL CURRENT LIMITER The X channel of this monitor must do more work than the Y chann

Wells-Garnder Color Vector Monitor Guide Page 53 of 73 4 - HIGH VOLTAGE POWER SUPPLY These changes to the high power supply should reduce incidence o

Wells-Garnder Color Vector Monitor Guide Page 54 of 73 mostly just the tempest attract mode. So there could be some unknown problems with this. It is

Wells-Garnder Color Vector Monitor Guide Page 55 of 73 Schematic 2.1 Schematic 3.1

Wells-Garnder Color Vector Monitor Guide Page 56 of 73 Schematic 4.1 Figure 4.2

Wells-Garnder Color Vector Monitor Guide Page 57 of 73 Appendix B: Theory of Operation THEORY OF OPERATION: Wells Gardner "Quadrascan" C

Wells-Garnder Color Vector Monitor Guide Page 58 of 73 DC (about 35V). Capacitors C100 and C101 form the first stage of filtering. Resistors R102 and

Wells-Garnder Color Vector Monitor Guide Page 59 of 73 SPOT KILLER The purpose of the spot killer is to turn off the video intensity amplifiers when

Wells-Garnder Color Vector Monitor Guide Page 6 of 73 The Amplifone uses a neck socket that is the same as most other (non-vector) monitors, but the W

Wells-Garnder Color Vector Monitor Guide Page 60 of 73 Appendix E: Vector Monitor Slew Rates Vector Monitor Slew Rates Courtesy of Jon Raiford Her

Wells-Garnder Color Vector Monitor Guide Page 61 of 73 Appendix F: Testing Transistors Most of the failures in the Wells-Gardner 6100 monitor (as i

Wells-Garnder Color Vector Monitor Guide Page 62 of 73 combinations should show a resistance and that value should be 2.5K Ohms; none of the resistanc

Wells-Garnder Color Vector Monitor Guide Page 63 of 73 Appendix G: Installing A Cap Kit If you do not have a manual for this monitor, get a copy, as

Wells-Garnder Color Vector Monitor Guide Page 64 of 73 Zanen's Standard Instructions: This monitor repair kit is designed for the Wells-Gardner

Wells-Garnder Color Vector Monitor Guide Page 65 of 73 THE REAL INSTALLATION/UPGRADE STORY When I ordered the Zanen #206 cap kit, I felt the instru

Wells-Garnder Color Vector Monitor Guide Page 66 of 73 CHASSIS TRANSISTORS All the monitor chassis transistors are mounted in a socket with two Phil

Wells-Garnder Color Vector Monitor Guide Page 67 of 73 DEFLECTION BOARD The Deflection board is the main PCB mounted right behind and below the moni

Wells-Garnder Color Vector Monitor Guide Page 68 of 73 DEFLECTION BOARD (cont.) The following Deflection board parts should also be replaced, and ar

Wells-Garnder Color Vector Monitor Guide Page 69 of 73 DEFLECTION BOARD (cont.) To test the capacitors you will need a meter that has this option. M

Wells-Garnder Color Vector Monitor Guide Page 7 of 73 Manuals Some words of caution about the Atari manuals. There are three versions of TM-183. If y

Wells-Garnder Color Vector Monitor Guide Page 70 of 73 HIGH VOLTAGE The High Voltage PCB (in the metal cage with the flyback transformer) had severa

Wells-Garnder Color Vector Monitor Guide Page 71 of 73 HV Board Notes. On the HV circuit board there are two diodes D901 and D902, which the Atari TM-

Wells-Garnder Color Vector Monitor Guide Page 72 of 73 TESTING YOUR WORK Test the Game Board Outputs before Turning the Monitor On. Make sure the ga

Wells-Garnder Color Vector Monitor Guide Page 73 of 73 CAP KIT SUMMARY: Parts you need to buy in addition to the Zanen cap kit. Summary: Parts you

Wells-Garnder Color Vector Monitor Guide Page 8 of 73 "Type-1N4001 Diode (D104-107, 602, 702)". • "Type-2N3904 NPN Transistor (Q804)&

Wells-Garnder Color Vector Monitor Guide Page 9 of 73 If you have a P314 deflection board, in addition to the changes listed above, you should upgrade