Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!ptimtc!nntp-server.caltech.edu!madler
From: madler@nntp-server.caltech.edu (Mark Adler)
Newsgroups: comp.sys.next
Subject: Re: Aging MegaPixel
Message-ID: <1991Apr15.043531.14333@nntp-server.caltech.edu>
Date: 15 Apr 91 04:35:31 GMT
References: <30043@cs.yale.edu> <1991Apr14.004806.14136@math.ucla.edu>
Distribution: usa
Organization: California Institute of Technology, Pasadena
Lines: 17


>> a couple bucks at Radio Shack. But I fashioded my own; what you need is 
>> essentially a long, thin, _non-conducting_ screwdriver (not Phillips). 

More importantly than conducting, it must be non-ferrous--insulating the
end of a steel screwdriver won't do.  Barry's wooden screwdriver works,
as does the plastic jobbies you can get at Radio Shack.  The point is that
you're adjusting iron-core inductors, so more iron hopelessly confuses the
adjustment.

I found that the single "focus" adjustment wasn't good enough for my
old MegaPixel, since I could not focus all the corners of the screen at
the same time.  Eventually the thing started dimming and NeXT replaced
it for free, even though it was out of warranty.  (I was impressed.)

Mark Adler
madler@pooh.caltech.edu