Help with adjusting the image on a WG6100

Gov

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I have recently got my Space Duel working by buying a new PCB and rebuilding the WG6100. The game works fine but the monitor needs some adjustments. The main problem is that the red/green/blue isn't lining up properly. It seems to be pretty uniform across the screen and the image attached is the approximate position of each color relative to each other.

Is this going to be a convergence ring adjustment or an adjustment on either the monitor PCB's or the game PCB?

Also, the screen seems to be rotated counter-clockwise slightly. What is the best adjustment for that?

I have read through the manual a bit but it is kind of hard for me to wrap my head around and I want to make sure I am adjusting what I need to and not something I don't.

I will take a video here in a bit if that will help.

Thanks

GOV
 

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Check the sticky - How to converge a monitor - for help with the convergence. As for the tilt - if the monitor isn't bolted in at a slight angle, then you'll have to loosen and turn the yoke slightly...
 
Thank you, I did read the sticky which was very helpful, I just wanted to make sure that was the way to go. :) The rotation of the yoke is a bit more daunting. :-/
 
Hey Gov,

It sounds like a yoke adjustment AND a convergence ring adjustment, just take your time and be mindful of what you are doing.

However I will say this, read the Space Duel manual as well. I had an issue where the image was two big on my Black Widow, and it turns out on the Black Widow at least, that all the adjustments for the monitor, being size and location, are actually located on the Black Widow PCB, not the 6100, and seeing as Space Duel as the same monitor, I think it will be a similar situation!

Hope that helps!

Thanks
Grant
 
I noticed that as well. If anything the image needs to be a bit larger on the screen, but I thought I would get the convergence fixed first. My friend jdoz2 is going to come over and help me adjust it.

Also, does it sound like I have a B+ issue if I have to have my HV pot turned all the way up to get +180v?
 
I noticed that as well. If anything the image needs to be a bit larger on the screen, but I thought I would get the convergence fixed first. My friend jdoz2 is going to come over and help me adjust it.

Also, does it sound like I have a B+ issue if I have to have my HV pot turned all the way up to get +180v?

I would turn off the monitor immediately and get another pot. You shouldn't have to turn the pot up that much, I set my right at 19,300 volts (as close as I could get with my pot) and I think I only turned it less than a quarter of a turn.

Yes you can set the HV by measuring the B+ voltage to 180v but that pot goes all the way to 20K ohms, and its suppose to set somewhere around 5.5K ohms.

Thats my recommendations. I know I need another HV pot for one of my HV chassis and I haven't found one yet.

-Grant
 
Also, I am having some issues with some vectors disappearing during game play. Probably PCB related, but I haven't had any answers yet about it in another thread I started.

 
Well crap, that is the new one I just put in from Bob Roberts.

If you got one from Bob then you might be ok, I don't know what his pots are rated for, I know you should never have to go anywhere near 20K ohms so you might actually be fine. So on that note I wouldn't worry about it.
 
How do you measure the ohms on the pot? I tried measuring the top two contacts (not the sides) of the pot and I was getting weird readings. The lowest I could get was 11k ohm and the highest was 25k ohm.

I was probably doing it wrong.
 
Also, I am having some issues with some vectors disappearing during game play. Probably PCB related, but I haven't had any answers yet about it in another thread I started.


Better to make a video of the test-screens, test-screens tell a lot more than the game screen in these situations....

Especially the white hash screen....
 
Better to make a video of the test-screens, test-screens tell a lot more than the game screen in these situations....

Especially the white hash screen....

Agreed, I used the test screens to both diagnose and set all the pots for my monitors on my Black Widow.

The White hash screen was the screen I was having the biggest problem with as well.

-Grant
 
That's interesting, you don't have a raster test screen on your Space Duel. On my Black Widow I had a raster test screen where you had to get the lines to be about an inch thick and ends had to be paralleled with the white box.

You can see it the most on the test screen with all the colors lines, those lines of colors should all look like a rectangle, not slanted as they are now, does that make sense?

-Grant
 
I same problem.
I replaced pots on game board and tested on scope. Lined up size on screen. Perfect!
There is a pcb that will help corners of wg. But mine isn't that bad that it needs the mod.
 
Yeah, generally vector monitors have little or no adjustments, and all the adjusting is done on the PCB. And your convergence is way off.

I think the missing vector issue is still a monitor problem. A similar problem happens on Tempest's attract screen, the "MCMLXXX" in the copyright won't draw completely as the Tempest text zooms from the center of the screen. The large number of vectors stresses the deflection circuits, and if there are issues they can manifest in this way. The fact that it happens when there are more vectors to display makes me think this is the issue. Unfortunately I don't know the solution, but I bet someone either here or on VectorList does.
 
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