Electrohome 19 Manuel de service

Black & White Vector Monitor Guide Page 1 of 57 The Black & White Vector Monitor FAQ and Guide Version 1.2 April 03, 2002 Table of Co

Black & White Vector Monitor Guide Page 10 of 57 All the Atari Italian-built vector games - Battlezone and Asteroids, used a vector monitor prod

Black & White Vector Monitor Guide Page 11 of 57 The x-gain and y-gain will have to be adjusted a little on the B&W board to make the picture

Black & White Vector Monitor Guide Page 12 of 57 Issue 2 manual has a revised deflection board parts list noting the following: • C602 and C603

Black & White Vector Monitor Guide Page 13 of 57 HIGH VOLTAGE BOARD It is reported that the weakest part of these monitors is the EHT or High

Black & White Vector Monitor Guide Page 14 of 57 A really good way to remove and replace the HV diode is to use a hair dryer to soften up the hou

Black & White Vector Monitor Guide Page 15 of 57 DEFLECTION BOARDS When working on your deflection board, it is very important to remove the in

Black & White Vector Monitor Guide Page 16 of 57 “Issue 4” Deflection Board: Issue 4 deflection boards seem to be almost identical to the later

Black & White Vector Monitor Guide Page 17 of 57 ISSUE 5 DEFLECTION PCB PINOUTS (P100) PIN DESCRIPTION 1 Z input .5V blanking 1.0V blacklevel

Black & White Vector Monitor Guide Page 18 of 57 R101 and R100 and (on early revisions of the board) jumper the pads with a length of heavy-gauge

Black & White Vector Monitor Guide Page 19 of 57 "X" and "Y" Amplifiers If the top, bottom or sides of the display flutter

Black & White Vector Monitor Guide Page 2 of 57 INTRODUCTION Note: Very little, if any, of this document is my own work. Information in this do

Black & White Vector Monitor Guide Page 20 of 57 their way back to the power cord. The - and + terminals head towards the guts of the deflection

Black & White Vector Monitor Guide Page 21 of 57 All Readings are DC Level Voltages "X" INPUT DC LEVEL FOR

Black & White Vector Monitor Guide Page 22 of 57 TUBE AND YOKE Replacement monitor tubes are currently available for the Electrohome G05-802 a

Black & White Vector Monitor Guide Page 23 of 57 Asteroids Deluxe For video inversion on an Asteroids Deluxe upright, Pin 19 on the game board

Black & White Vector Monitor Guide Page 24 of 57 You can also invert the video on the monitor itself, although this method leaves you with a moni

Black & White Vector Monitor Guide Page 25 of 57 Focus Control Adjustment Located in the EHT supply module. Hole in supply heat sink/wrap provid

Black & White Vector Monitor Guide Page 26 of 57 color alignment problems, so the yoke windings are not nearly as critical as they are in color X

Black & White Vector Monitor Guide Page 27 of 57 INSTALLING A CAP KIT Time and heat have "dried out" the electrolytic capacitors in y

Black & White Vector Monitor Guide Page 28 of 57 I would strongly recommend using a High Voltage Probe to discharge the monitor. This is the safe

Black & White Vector Monitor Guide Page 29 of 57 RESOLDERING CONNECTORS Wherever there is a cable attached to your deflection or HV board ther

Black & White Vector Monitor Guide Page 3 of 57 What Is A Vector Monitor (taken from the Bally/Midway Omega Race manual) Welcome to the world of

Black & White Vector Monitor Guide Page 30 of 57 G05-801 DEFLECTION BOARD Zanen G05-801 Deflection PCB Parts Location Part Number Upgrade N

Black & White Vector Monitor Guide Page 31 of 57 G05-801 REGULATOR BOARD The G05-801 Bottom Panel Regulator PCB. Zanen G05-801 Regulator Boar

Black & White Vector Monitor Guide Page 32 of 57 G05-802 DEFLECTION BOARD Zanen G05-802 Deflection PCB Parts Location Part Number Upgrade

Black & White Vector Monitor Guide Page 33 of 57 G05-802 HIGH VOLTAGE BOARD The High Voltage PCB (in the metal cage with the flyback transforme

Black & White Vector Monitor Guide Page 34 of 57 V2000 DEFLECTION BOARD Zanen V2000 Deflection PCB Parts Location Part Number Upgrade Notes

Black & White Vector Monitor Guide Page 35 of 57 V2000 HIGH VOLTAGE BOARD The High Voltage PCB (in the metal cage with the flyback transformer)

Black & White Vector Monitor Guide Page 36 of 57 TROUBLESHOOTING Troubleshooting monitors requires experience, patience, and luck. The first

Black & White Vector Monitor Guide Page 37 of 57 Lacking an HV probe, you can use this tried and true method, be it a little more dangerous. Use

Black & White Vector Monitor Guide Page 38 of 57 then the other on the emitter. No matter which lead is used, there should be infinite resistance

Black & White Vector Monitor Guide Page 39 of 57 B. Vertical line (due to "X" amplifier defect). • Bad "X" amplifier output

Black & White Vector Monitor Guide Page 4 of 57 THEORY OF OPERATION To understand what goes on inside the monitor, large general groups of circ

Black & White Vector Monitor Guide Page 40 of 57 9. Monitor won’t turn on: A. Open fuse(s). B. A defect in the power supply; check: • Fuse(s). •

Black & White Vector Monitor Guide Page 41 of 57 On the Wells-Gardner 19V2000 monitor, the anode voltage is supposed to read 14.5KV High Voltage

Black & White Vector Monitor Guide Page 42 of 57 The following symptoms and diagnosis come from various people and sources. I cannot verify any

Black & White Vector Monitor Guide Page 43 of 57 SPECIAL NOTE: Omega Race games for some really strange reason do not use pin 12. They have a s

Black & White Vector Monitor Guide Page 44 of 57 This is also the symptom that is present if the X or Y signal coming off of the board is stuck

Black & White Vector Monitor Guide Page 45 of 57 Chasing thru the Z-drive is easy after verifying proper operation of the HV board and deflection

Black & White Vector Monitor Guide Page 46 of 57 Symptom: No Picture. Spot Killer is Off. Game Plays Blind With Deflection Chatter. Check the f

Black & White Vector Monitor Guide Page 47 of 57 Symptom: Picture Is Faint, or Has A Slight Glow. If your game uses a black light (Asteroids De

Black & White Vector Monitor Guide Page 48 of 57 You must also verify that the X and Y outputs from the game board are not stuck (+) or (-). This

Black & White Vector Monitor Guide Page 49 of 57 Symptom: Fuse 100 (101) open Check bridge rectifier DB100 for shorted diodes. Check capacitor

Black & White Vector Monitor Guide Page 5 of 57 input is about 7.5 volts AC. The “X” channel information represents parts of objects from LEFT to

Black & White Vector Monitor Guide Page 50 of 57 G05-801 High-Voltage Board Symptom: Fuse open (F900) This may be a matter of adjustment. Loc

Black & White Vector Monitor Guide Page 51 of 57 Follow the steps listed below to determine which is the faulty board. The Y measuring points are

Black & White Vector Monitor Guide Page 52 of 57 If the red LED is off: 0504 is open, Q503 is shorted, contrast control R526 is open or there is

Black & White Vector Monitor Guide Page 53 of 57 WHAT TO DO WHEN YOU DON’T KNOW WHAT TO DO If you are totally confused about where to begin to

Black & White Vector Monitor Guide Page 54 of 57 Appendix A: Common Ground Connections From: John Robertson <[email protected]> Newsgroup

Black & White Vector Monitor Guide Page 55 of 57 Appendix B: Testing Transistors Most of the failures in the Electrohome G05 or Wells-Gardner V2

Black & White Vector Monitor Guide Page 56 of 57 TESTING TRANSISTORS WITH A DIGITAL MULTI-METER Set your meter to the diode test. Connect the r

Black & White Vector Monitor Guide Page 57 of 57 Appendix C: Using a B&W Vector Monitor with a Color Game Board From: Steve <zarco@sonic

Black & White Vector Monitor Guide Page 6 of 57 The amplified signal is applied to a cascade stage formed by Q605, Q606 and then applied to the b

Black & White Vector Monitor Guide Page 7 of 57 If the “spot killer” didn’t come on when any of the above conditions exists, the electron beam wo

Black & White Vector Monitor Guide Page 8 of 57 supply’. All of the secondary diodes are fast recovery to operate at the 30KHz oscillator frequen

Black & White Vector Monitor Guide Page 9 of 57 smaller the pop and dimmer the flash. But BE CAREFUL, picture tubes will hold a very healthy char