Vector The Black And White Monitor Faq And Guide

Black & White Vector Monitor Guide  
Page 31 of 51  
HIGH VOLTAGE (cont.) 
 
  
V2000 HIGH VOLTAGE 
 
The High Voltage PCB (in the metal cage with the flyback transformer). 
 
Zanen V2000 HV PCB Parts Location Part Number Upgrade Notes C900 1000 uF   50V radial capacitor   C901 1000 uF   50V radial capacitor   C904 47 uF       50V radial capacitor   C907 4.7 uF    160V radial capacitor   C908 4.7 uF    250V radial capacitor    
 
  
G05-801 REGULATOR BOARD 
 
The G05-801 Bottom Panel Regulator PCB....

Black & White Vector Monitor Guide  
Page 32 of 51  
TROUBLESHOOTING  
 
Troubleshooting monitors requires experience, patience, and luck. The first step is to match the 
symptom the monitor displays to the diagnosis next to it in the “SYMPTOM-DIAGNOSIS” 
subsection.  This will pinpoint the circuit the problem is probably in, and often the parts to check. 
Next, the circuit should be visually inspected to see if there are any parts broken, burned, or if 
something is there that shouldn’t be, like a loose...

Black & White Vector Monitor Guide  
Page 33 of 51 and a flash. The longer the monitor has been turned off, the smaller the pop and dimmer the flash. 
But BE CAREFUL, picture tubes will hold a very healthy charge for at least a week if not longer. 
Even after you’ve discharged it once, it may still carry a residual charge. It’s better to be too careful 
than dead, which is why electronic equipment always carries stickers referring servicing to 
qualified personnel. Handle the side with the viewing screen...

Black & White Vector Monitor Guide  
Page 34 of 51  
A diode is tested like a transistor except it only has two leads. Again, there should be high 
resistance one way and little resistance the other. If it tests bad, take one lead out of the circuit in 
case some component is messing up the ohmmeter reading. 
 
NOTE: DO NOT leave soldering equipment on the leads too long since all semiconductors, 
especially integrated circuits, are easily destroyed by heat. 
 
Without special equipment, integrated...

Black & White Vector Monitor Guide  
Page 35 of 51 3. Poor focus: 
A. Low focus voltage from the high voltage board. 
B. Defective diode off the flyback. 
C. Defective focus control. 
D. Defective picture tube (CRT), although the chances of this are unlikely. 
 
4. Picture not bright enough: 
A. If the CRT voltages are present, the picture tube might be bad, although the chances of 
this are unlikely. 
B. Weak 90-volt supply from the EHT power supply. 
C. Loose wire to socket of CRT for G2 voltage. 
 
5....

Black & White Vector Monitor Guide  
Page 36 of 51 11. Extremely bright picture; spider-web like retrace lines floating around on the picture: 
A. Defective Z amplifier circuitry; check: 
· The brightness and contrast controls. 
· For peeled foil on the deflection board. 
· Semiconductors, etc. 
B. See symptom 4, diagnosis B and C ONLY. A bad EHT power supply or loose G2 wire 
can cause the same thing. 
 
12. Hazy blob of light that shimmers on the screen. 
A. Open secondary on flyback winding. 
B....

Black & White Vector Monitor Guide  
Page 37 of 51 some-thing you shouldn’t, you’re dead. If this scares you, have someone qualified (a technician) 
perform this adjustment for you. Better SAFE than sorry. 
 
If you are still unsure, it may be best if you call Electrohome at (519) 744-7111 and obtain exact 
information from one of their staff engineers. [NOT LIKELY!] 
  
The following symptoms and diagnosis come from various people and sources. I cannot verify any of these will work for you. All...

Black & White Vector Monitor Guide  
Page 38 of 51  
Bad game boards will usually have X/Y/Z Out = 0 VAC.  If you get 6-7 VAC on all of them, then 
your game board is probably OK. 
 
SPECIAL NOTE:  Omega Race games for some really strange reason do not use pin 12.  They 
have a separate wire soldered directly to the monitor board bypassing the connector and bridging 
the heater voltage from another point. 
 
  
Symptom: Fuses F100 and F101 blow on powerup. 
 
Test the diode bridge (DB100) with the...

Black & White Vector Monitor Guide  
Page 39 of 51  
Symptom: Deflection Transistor(s) Continuously Shorts. 
 
On the V2000, a shorted D608 (“Y”) or D708 (“X”) will fry the pre-amps Q607 or Q706 
respectively. Replacing the shorted transistors will not help if the diodes are still bad. 
 
Also, check the transistors that drive the base of the shorted transistor. When a negative deflection 
transistor shorts it almost always shorts the one driving its base. 
 
This is also the symptom that is present if...

Black & White Vector Monitor Guide  
Page 40 of 51 When you unground the pin, the led goes out, and yoke chatter resumes. This test is important 
because it eliminates 50 % of the circuits in the monitor that would give those symptoms, such as 
the deflection system. 
 
The problem could be a bad spot killer circuit (leaky transistors in the spot killer circuit).  Never 
bypass the spot killer, get it fixed right.  It will probably take an oscilloscope to track it down, or 
just replace the four...