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From: barry@pico.math.ucla.edu (Barry Merriman)
Newsgroups: comp.sys.next
Subject: Re: Aging MegaPixel
Message-ID: <1991Apr14.004806.14136@math.ucla.edu>
Date: 14 Apr 91 00:48:06 GMT
References: <30043@cs.yale.edu>
Sender: news@math.ucla.edu
Distribution: usa
Organization: UCLA Dept. of Math, UCLA Inst. for Fusion and Plasma Research
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In article <30043@cs.yale.edu> victor@tesla.math.yale.edu (Mladen Victor Wickerhauser) writes:

>
>Have any of you other old-timers noticed your cubes getting fuzzy?  

Yes. 

>linear EE type with an out-of-warranty MegaPixel (like mine) opened it up and
>performed amateur surgery?  

Yes.

>Did the patient recover?  

Yes, fully. I highly recommend it, about once every 6 months.

All you need to do is:

(with you computer on, since you need to see how the screen is doing)

(0) You need a special tool---a TV repairman's adjustment tool, or
some good approximation. Supposedly you can such a tool for
a couple bucks at Radio Shack. But I fashioded my own; what you need is 
essentially a long, thin, _non-conducting_ screwdriver (not Phillips). 
I took the dowel from a VCR cleaner swab and carved the end into a wedge shape.
What ever you do, be sure you are protected from the high voltages
inside the monitor---so don't use a conducting object!

(1) Remove the plastic cover from the back of the MegaPixel display;
it is held on by 4 Hex bolts. Use your  NeXT HeX ToOL to unscrew these.

(2) on the back you will see holes in the perforated shielding; looking through
these, you will see holes labeled
``focus'' etc. (At least I think they were labelled...). Using
the special tool, insert it into the hole until you get to the 
adjustment screw, and turn it to make the adjustment. It helps
to have two people, one to work the screw, on to watch the
screen. The best thing to watch on the screen is the trademark
"R" on the Websters Icon---you can get it to look clearly like an 
"R" in a circle at optimal focus.

(3) Reassemble.


Note: I take no responsibility if you kill yourself trying this;
it worked for me, but I may be a lot smarter (or luckier) than you.

--
Barry Merriman
UCLA Dept. of Math
UCLA Inst. for Fusion and Plasma Research
barry@math.ucla.edu (Internet)