Re: The first 25" Major Havoc lives!

Double check the placement of the alignment ring set. They may be off a
bit...otherwise you will have to use the magnet strips.

Note: I suspect if you VERY carefully mark the tube and convergence rings
before you remove them from the tube for yoke replacement that if you then
put the rings back EXACTLY as removed that the convergence might be
correct! After all the rings are to compensate for errors in the guns, not
the yoke (IMHO)

John :-#)#

At 10:53 AM 2/7/2000 -0500, you wrote:
>For those of you who have been following my project, I have finally
>finished the technical portion. My Major Havoc now lives in full color
>(converged pretty good too) in a 25" 720 cabinet complete with custom
>control panel. There is an awful log of bowing on the display, so it is
>probably worth my while to install one of Clay's display correctors (Clay:
>any chance you want to donate one to a good cause?)
>
>I do have one question. During the convergence, even though it all went
>smoothly, it is still a little off at the top and bottom of the
>screen. The red and blue are both dead on with each other, but the green
>gradually pulls away the further away from the center you get. The
>convergence magnets don't seem to fix it, and the yoke appears to be at
>its optimal location, yet I still seem to have this problem.
>
>Is this why magnetic shunts are sometimes used? Could it be the location
>of the magnetic convergence assembly itself? Or is this just the effect
>of a yoke not designed for a particular tube? As it is, it does look
>pretty good already. I guess I'd just like to make it perfect. I'll post
>a picture later tonight showing the effect that I'm seeing.
>
>Jon
>
>ftp://arcade.ne.mediaone.net/incoming/720-to-MH/720toMH_Working.jpg
>
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  John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
  http://www.flippers.com
         "Old pinballers never die, they just flip out."

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Received on Mon Feb 7 14:54:56 2000