Path: utzoo!utgpu!water!watmath!mks!wheels
From: wheels@mks.UUCP (Gerry Wheeler)
Newsgroups: comp.sys.atari.st
Subject: Re: SM124 Differences ?
Summary: DC offset problem?
Message-ID: <494@mks.UUCP>
Date: 28 Jul 88 16:36:00 GMT
References: <8807270941.AA03440@ucbvax.berkeley.edu>
Organization: Mortice Kern Systems, Waterloo, Ont.
Lines: 23

In article <8807270941.AA03440@ucbvax.berkeley.edu>, XBR3D815@DDATHD21.BITNET writes:
> Is someone out there in netland who knows a difference between older and the
> newest SM124 B&W-monitors which could explain the following behavier:
> Mega ST4 and old (Oct. 87) Monitor:
>     In reverse mode (light text on black background) is brightness dependent
>     on information on screen !
> Mega ST4 and new (Mar. 88) Monitor:
>     The symptom does not occur !

I haven't seen this problem on the Atari, but I have seen it on other
systems.  (Usually the ones with a cheap monitor.) And, I recall from
somewhere in the dark past that monitors used to come with a switch
labelled "DC offset" or some such.  This allowed you to set the monitor
for automatic brightness when you used it for television work, and to
disable that feature for computer work.  Maybe your monitor is set up
the wrong way? Maybe it needs repair? I use an old old monochrome
monitor on a 520ST and it has no problem whatsoever. 

-- 
     Gerry Wheeler                           Phone: (519)884-2251
Mortice Kern Systems Inc.               UUCP: uunet!watmath!mks!wheels
   35 King St. North                             BIX: join mks
Waterloo, Ontario  N2J 2W9                  CompuServe: 73260,1043