Path: utzoo!utgpu!water!watmath!clyde!rutgers!ucla-cs!zen!ucbvax!decvax!decwrl!viking.dec.com!long
From: long@viking.dec.com (Rich Long - LJ02 - DTN 226-2598)
Newsgroups: comp.sys.mac
Subject: Screen Jitter on a Macintosh SE - a Fix?
Message-ID: <8801122138.AA04420@decwrl.dec.com>
Date: 12 Jan 88 21:38:01 GMT
Organization: Digital Equipment Corporation
Lines: 31

Hello everyone, 

This is my first USENET posting, so please forgive me if I do anything wrong! 

I'm having a problem with my Macintosh SE that I hope has a cure: It has had a
screen jitter almost since the day I bought it.

System Configuration:

	Apple Macintosh SE
	2.5 MB RAM  (Apple Upgrade, done with analog board replacement, see
                     below)
	Internal HD20
	Internal 800K floppy
	Extended Keyboard   

The machine was purchased in August of 1987, and the jitter grew steadily
worse, until the analog board was replaced under extended warranty in December
1987.  That fixed the problem for a short time, but it has recurred, and seems
to be getting worse again! The whole screen jitters, but the major disturbance
seems to be confined to the lower left quadrant.  If this is an interaction
between the fan/video or the hard disk/video, is there a fix for it??? Is there
any fix for it??

I find this problem EXTREMELY annoying.

Help save my Mac!  I really do like it except for the screen shake. 
    
Thanks in advance,

Rich Long