Re: Best Apple IIgs Monitor Solution?

[nyder <nyder.23@gmail.com>]

Sweet, thanks for the info Michael, I knew there was a solution somewhere.


On Sunday, January 6, 2013 10:21:26 AM UTC-8, Michael J. Mahon wrote:
> Tempest <reichert2084@gmail.com> wrote:
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> > On Sunday, January 6, 2013 2:19:50 AM UTC-5, Michael J. Mahon wrote:
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> >> Tempest <reichert2084@gmail.com> wrote:
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> >>> On Saturday, January 5, 2013 8:34:22 PM UTC-5, nyder wrote:
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> >>>> On Saturday, January 5, 2013 5:09:15 PM UTC-8, Tempest wrote:
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> >>>>> I scoured that schematic and I can't find R353 which is supposedly the
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> >>>>> V Position adjust.  It's got to be there, but maybe it's not on the
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> >>>>> schematic for some reason?
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> >>>> Ya, I did a search also, didn't see it.   Tried to find the data info on
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> >>>> the TA 7664 CP chip that does all that stuff, but couldn't find one
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> >>>> (Found a TA7644 BP that does video, but it's didn't see anything in it).
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> >>>> I will swear I've heard of this being possible, but I didn't find
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> >>>> anything.   Always possible it's PCB has a R353 labeled without a
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> >>>> connector, but I'm not about to pop mine own to check.
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> >>>> Sorry i couldn't be of more help.
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> >>> I'll ask over on the Amiga board, maybe they'll know?
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> >> Many monitors have two magnetic rings with projecting tabs on the rear of
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> >> the deflection yoke. 
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> >> Adjusting one tab relative to the other changes the amount of lateral shift
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> >> and turning both together changes the direction of lateral shift. These are
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> >> called "centering magnets" and they are used to center the raster on the
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> >> CRT. 
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> >> -michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon
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> > I'm not sure I want to go as far as messing with the centering magnets,
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> > but I suppose I could as a last ditch effort.
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> They seldom need readjustment, but that's what they're for.  It should take
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> about a minute once you open the case and get the raster displayed. 
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> -michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon