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From: prg@bonnie.ATT.COM (Paul R. Gloudemans)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Mac Plus screen *mostly* black
Summary: Reseat Analog Board Connectors
Message-ID: <4573@cbnewsl.ATT.COM>
Date: 14 Mar 90 00:49:07 GMT
References: <49smithw@physc1.byu.edu>
Sender: nntp@cbnewsl.ATT.COM
Reply-To: prg@bonnie.ATT.COM
Organization: AT&T Bell Laboratories
Lines: 25

In article <49smithw@physc1.byu.edu>, smithw@physc1.byu.edu writes:
> 
>    I have a Mac+ at home and I've noticed just lately that on
>  start up sometimes (maybe 10% of the time) about 80 to 90% of
> the screen is dark except for a normally lighted strip down the
> left hand side.  This weirdness goes away when the hard disk starts
> to boot. There is not a definite line between the light and dark
> parts of the screen, it sort of fuzzes into black.  Then yesterday
> I was doing some word processing and suddenly this same thing happens
> again.  It looks just like the screen is a dark room when someone
> opens a door (at the left of the screen) and some light washes over
> some of the objects in the room. Very strange.  Any one know what
> is going on with this beast?  . . .

I had this same EXACT problem.  It occurrred only in the winter
months (shrinking due to lack of moisture in air?).  Anyway, I
upgraded to 4 Meg memory 12/89 and took the opportunity at that time
to reseat the connectors on the Analog Board.  The problem has not
occurred since.  You might give this a try.

Two other friends have also had Mac+ screen problems, although not exactly
the same symptoms, that have been cured by reseating the connectors.
--
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Paul R. Gloudemans       prg@bonnie.ATT.COM