Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!netsys!ziggy!scotty
From: scotty@ziggy.UUCP (Scott Drysdale)
Newsgroups: comp.sys.amiga
Subject: Re: lousey video
Keywords: ghosting, fuzzy wuzzy was a bear.
Message-ID: <170@ziggy.UUCP>
Date: 15 Feb 89 02:31:40 GMT
References: <1972@pur-phy>
Reply-To: scotty@ziggy.UUCP (Scott Drysdale)
Distribution: comp.sys.amiga
Organization: Un*x Link,Frederick Md.
Lines: 26

In article <1972@pur-phy> tlm@newton.physics.purdue.edu.UUCP (Timothy Lee Meisenheimer) writes:
>all - pretty generic. The video will be nice and scrisp (I have colors which
>I like and which help alot with the flicker), then it will jitter a bit and
>finally goes blurry. One set of raster lines (either odd or even ones - I don't
>know) stands out compared to the other set. Some of the solid fill areas -
>like that in the front and back arrangement gadgets get ghosted to the left.
>After a while the video will be cleaned back up and will look sharp again.

>tim.

i've got the same problem with my 1084 and 1000 - i think it's the monitor.
there is a related problem when NOT in interlace - i've got the screen shrunk
down a bit (to the point where i can see the raster lines at the top) and it
will occasionally jitter +/- one video line for a minute or so and go away.
happens every few weeks without interlace, but in interlace i'm guaranteed
ot see it within 10 minutes of use.  when interlaced, the problem shows itself
as the alternate scan lines overwriting each other with empty lines between
the scanned lines.  it's not the amiga - i used to run the 1084 off the RGB
port and had a composite b&w monitor on the composite port and the 1048 would
lose it, but the composite was steady as a rock.  i've seen the same problem
on a friend's magnavox monitor (the one that looks like a 1084).  oh, it
seems more likely to happen with less bright colors on the screen (which may
explain the interlace problem - i tend to have very mellow colors for
interlace).  anyways, sounds like some kind of dc restoration problem in
a sync circuit somewhere, and i don't do tv's.
  --Scotty