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From: wmartin@ut-ngp.UUCP (Wiley Sanders)
Newsgroups: net.micro.mac
Subject: Re: Power Supply Troubles?
Message-ID: <3345@ut-ngp.UUCP>
Date: Mon, 5-May-86 18:28:44 EDT
Article-I.D.: ut-ngp.3345
Posted: Mon May  5 18:28:44 1986
Date-Received: Thu, 8-May-86 05:47:08 EDT
References: <13507@ucbvax.BERKELEY.EDU>
Reply-To: wmartin@ngp.UUCP (PUT YOUR NAME HERE)
Organization: UTexas Computation Center, Austin, Texas
Lines: 20

In article <13507@ucbvax.BERKELEY.EDU> chavez@ucbvax.BERKELEY.EDU (Thomas M. Chavez) writes:
>Just today my Mac screen started waving back and forth, sort of rippling from
>top to bottom.  I don't think that I am over heating because I have my new
>Fanny Mac keeping the temperature down, and the line voltage is right at 120V.
>Has anyone else seen this problem?  Is my analog board going to blow?  Should
>I buy Apple Care before it does?  (How much is an analog board?)
>
If the "rippling" is a quick, jerky, kind of thing, yes, you are sooner or
later going to need a new analog board. I bought a 128K Mac soon after they
came out. About a year ago, my video display began to spazz out, especially
during the first 15 min after warmup. Eventually it would stabilize. Then,
about two months ago, the problem began to get worse and worse, quickly. One
day I turned the Mac on and there was nothing but a bright vertical line on the
screen, so I got the analog board replaced. I heard a rumor there were a lot
of these problems with the first Macs. My new board has a much brighter dis-  
play; I used to keep the brightness control pretty much full up, I keep
it at about 75% now.
   The moral: Live with the problem as log as you can, but eventually you'll
need a new analog board.
-w