Re: Sega G80 Vector issue "diverged Red/Blue"

Many thanks.
The ST doesn't really have a test mode with useful patterns in it. Just that
one screen with the "horizontal lines".
I'll have to figure out how to get test patterns in place to fix the
convergence. Does anyone have one for sale?

The one areas people seem to be ignoring is the horizontal line near the tip
of the triangles.
http://forums.arcade-museum.com/showpost.php?p=1733398&postcount=152
Is this normal? I don't think that is a convergence issue. There is also
some "overhang" on some of the lettering. Am I chasing two problems here?

John

-----Original Message-----
From: Andrew Welburn
Sent: Wednesday, August 10, 2011 2:43 AM
To: vectorlist@vectorlist.org
Subject: Re: VECTOR: Sega G80 Vector issue "diverged Red/Blue"

Its a classic convergence issue, get the service manual and you could
proabbly bring it back inline by adjusting the rings, or at least get it
somewhat nearer (perfection is hard to obtain with vectors ;)

--
Andrew Welburn
http://www.andys-arcade.com
----- Original Message ----- 
From: "Zitt Zitterkopf" <zittware@hotmail.com>
To: <vectorlist@vectorlist.org>
Sent: Wednesday, August 10, 2011 6:58 AM
Subject: VECTOR: Sega G80 Vector issue "diverged Red/Blue"
I'm beginning to wrap up my Sega Star Trek Captain's Chair restoration;
having put the machine together... I've noticed some vector issues:
I documented my new top high score to demostrate the problem in my
restoration thread on KLOV:
http://forums.arcade-museum.com/showpost.php?p=1732912&postcount=148
The red and blue guns don't appear to line up on the score and credit
vectors. In the overview map; the klingon ships appear mostly correct; but
they do sometimes appear as diveraged guns depending on some game play
parameter I can't really nail down.
I don't really think there a monitor issue; I'm guessing it's on the XY
board in the card cage - given it was home to a solderbridge early in the
debug; but not real sure where to begin looking.
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