Re: Calling all convergence experts, wizards, and gurus

From: Mark Shostak <shostakmark_at_gmail.com>
Date: Sun Mar 13 2011 - 14:46:50 EDT

> At this point, am I just down to working with the strips and chevron
magnets (I have a good supply of both)?

Where are you getting your magnets & strips from?

Thanks,
-Mark

On Sun, Mar 13, 2011 at 10:45 AM, Scott McGovern <m_mcgover@yahoo.com>wrote:

> I've filtered through many previous posts on here, but I am hoping that my
> questions can elicit some more tutorial like suggestions to fix my
> convergence issue. I am putting together a 25" "amplifone" vector monitor
> to go into my Star Wars cockpit de-conversion. Like others have done
> previously, I am using a 100deg 25" medium resolution tube, wells gardner
> 6100 yoke, and amplifone deflection/high voltage pcbs. Here is a zoomed out
> pic of what I've been able to accomplish (all pic links are 800px wide):
>
>
> https://lh5.googleusercontent.com/_xUpoDi3iW5A/TXzhVLoALpI/AAAAAAAAAXM/ZZaFJs4CH7s/s800/IMG_5659.JPG
>
> As you can see all three colors are pretty well converged
> left/right/up/down in the center (although you can see the green starting to
> diverge towards the bottom in this center close up pic):
>
>
> https://lh4.googleusercontent.com/_xUpoDi3iW5A/TXzhXESrx0I/AAAAAAAAAXU/8v-Bl80793k/s800/IMG_5661.JPG
>
> I have the red/blue pretty well converged everywhere. However, I cannot
> get the green to lay on top of the red/blue near the top and bottom edges.
> In addition to a small vertical offset, the green does not bow inward to
> the screen's center as much as the red/blue does:
>
>
> https://lh4.googleusercontent.com/_xUpoDi3iW5A/TXzhVEAv4JI/AAAAAAAAAXI/vDQHCusMe-g/s800/IMG_5662.JPG
>
> The sides are fairly well converged, though (certainly better than the
> top/bottom):
>
>
> https://lh4.googleusercontent.com/_xUpoDi3iW5A/TXzhVEpTPdI/AAAAAAAAAXE/RtI1qd-7ylk/s800/IMG_5666.JPG
>
> OK. So here are the questions. What can I do to get the green to lay on
> top of the red/blue on the top and bottom edges? I cannot seem to get there
> by adjusting the convergence rings. And, further yoke movement
> left/right/up/down from where I am seems to undo the work to get the
> red/blue to pretty much align well everywhere. I've also tried moving the
> rings forward/backward relative to the yoke and re-adjusting them, but I
> can't get that to do the trick either.
>
> At this point, am I just down to working with the strips and chevron
> magnets (I have a good supply of both)? If so, are there any tutorials or
> step-by-step instructions for *how* to use these to achieve convergence on
> the top and bottom? So far, my experiments where I am just moving them
> around never gets all three colors to align (most of the time it looks like
> I am undoing what I have). And, both the strips and chevron magnets seem to
> have more impact on the corners than the center of the edges, which is where
> my biggest convergence issue is.
>
> Any help or suggestings are greatly appreciated! I want to get this
> monitor converged and placed back into the cabinet so I can play Star Wars
> again.
>
> Thanks in advance
>
> Scott
>
>
>
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Received on Sun Mar 13 14:47:12 2011

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