Re: IIgs monitor blurring?

[aw133@lafn.org (James Poore)]

In a previous article, campbelb@agcs.com (Brian Campbell) says:


>>Edhel Iaur, Esq. <LOSETHECAPITALWORDSedhel@bigfoot.com> wrote:
>>>
>>>Does the 12" Apple RGB monitor used mainly with the IIgs get blurry
>>>after it's been on too long, or am I just sitting too close ;)
>>
>>You need to crack it open and give the focus knob inside a twist.
>
>My monitor is blurry (and dimmer) when you first turn it on,
>then gradually gets clearer (and brighter) over an hour or two.
>
>Where is the focus knob?  I've played with some "pots" inside
>the case, to help with the intensity problem, but I didn't see
>any thing that I could recognize as a focus knob.

Its located on the flyback transformer.  The flyback is the large black 
item on the pc board with a large diameter red wire going to the picture 
tube.

There are 2 controls, one for focus, and one called screen.  The screen 
control is similar to briteness but is NOT the same thing.  Going back 
and forth between screen and briteness can improve picture quality by 
putting the video signal in the linear range of thge picture tube.

Always make adjustments after a sufficent warm-up period.  This is 
usually the point where the monitor no longer changes and will stay on 
that particular level for hours.

Jim

-- 
James M (Jim) Poore--Apple II's Forever--Especially IIgs's
Los Angeles Free Net---aw133@lafn.org
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