Re: Star Wars vector issues (6100)

Hi Andy,
As I said in my post, I've tried all the board adjustments including linearity
(YLIN). I always try to do my homework and plenty of tinkering before jumping
the gun and posting something. :-) This definitely cannot be adjusted out.

To answer your question though, yes, the XLIN/YLIN pots move things around, but
not to any degree that this stretching in the center could be adjusted out. I
don't remember exactly what YLIN vs. the BIP pots do, but just trust me when I
say the adjustment pots do not help this problem at all.

Any idea on the vectors tearing apart?

________________________________
From: Andrew Welburn <andy@andysarcade.net>
To: vectorlist@vectorlist.org
Sent: Wed, January 5, 2011 6:01:58 AM
Subject: Re: VECTOR: Star Wars vector issues (6100)

 
Scott, put the game into test mode and get the crosshatch up, this is the only
way to adjust this out :
http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw3.jpg
 
You need to attack the YLIN adjustments, you say you've tried 'the obvious'
adjustments, but what happens when you turn the YLIN pot on this screen? do you
see any movement at all?
 
Refer to sheet 14A of the starwars schematics, point number 3 and 4, IMO you'll
have to bring X and Y size down a bit then bring XLIN and YLIN out a bit until
you get uniform sized diamonds..
 
The bowing on the sides is normal for running SW on a 6100, but your vertical
stretching is down to linearity. (sounds like you now this already)
 
I have never found capping a vector board to make any difference. I think
there's a bit of emperors new clothes syndrome about it :)
 
Either you havn't adjusted the linearity yet, or there is a problem in the
linearity part of the AVG section, but i can't see anything common to both
axis, it just looks like bad adjustments.
 

--
Andrew Welburn
http://www.andys-arcade.com
----- Original Message ----- 
>From: Scott Zeiser 
>To: vectorlist@vectorlist.org 
>Sent: Tuesday, January 04, 2011 11:28    PM
>Subject: VECTOR: Star Wars vector issues    (6100)
>
>
>Happy    New Year everybody...
>
>I picked up a Star Wars with a 6100 a while back    - I'm just getting around to 
>messing with it.  Right now I've got some    vertical stretching/distortion, as 
>well as a couple vector-related issues in    spots:
>
>Stretching in the center of Y axis, compressed on top and    bottom:
>http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw4.jpg 
>(stretching is most obvious in this pic)
>http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw3.jpg
>http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw1.jpg
>http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw2.jpg
>
>Vector    "tearing":
>http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw6.jpg 
>(bottom part of the "I" on "Insert" is falling off)
>http://i488.photobucket.com/albums/rr249/scottz29/klov/star%20wars/sw7.jpg
>
>I    know pincushion is an artifact of Star Wars on a 6100, but this center    
>bowing/distortion is different.  It's only on the Y axis as you can see    in 
>the first pic.  It's also definitely a board-related issue - I've had    my SW 
>hooked up to another 6100 and the issue showed up on both.  Has    anyone seen 
>this before, and if so, where can I start to fix it?
>
>This    brings up a second question:  is it worth capping vector boards?     For 
>the distortion, I'm guessing this *might* be cap-related on the AVG board,    
>and DAC related for the vector tearing...  Suggestions?
>
>I've tried    the obvious monitor & board adjustments - BIP adjustments,    
etc.
>
>
      
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