Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!bionet!agate!shelby!neon!gjohn
From: gjohn@Neon.Stanford.EDU (George H. John)
Newsgroups: comp.sys.mac.hardware
Subject: Old Mac with screen problems
Message-ID: <1990Oct10.232144.21550@Neon.Stanford.EDU>
Date: 10 Oct 90 23:21:44 GMT
Sender: gjohn@cs.stanford.edu (George John)
Distribution: usa
Organization: Computer Science Department, Stanford University
Lines: 12

I have an old 512KE that's now functionally a mac+.  
Problem: The screen undulates.  If you watch the left border of the
screen, you can see tiny waves going down the border about one every
three seconds.  I remember hearing something about analog board
problems and so forth.  Recently the screen has been flickering now
and then as well.  

Is there a book / technical article somewhere about this,
or could someone give me some advice?

Thanks,
George John