Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!cwjcc!ukma!phoenix
From: phoenix@ms.uky.edu (R'ykandar Korra'ti)
Newsgroups: comp.sys.amiga
Subject: Re: video problem in interlace
Message-ID: <11989@s.ms.uky.edu>
Date: 26 Jun 89 22:04:25 GMT
References: <3104@csd4.milw.wisc.edu>
Reply-To: phoenix@ms.uky.edu (R'ykandar Korra'ti)
Organization: El'n'k National Spaceport, Mission Control
Lines: 27

In article <3104@csd4.milw.wisc.edu> duncan@csd4.milw.wisc.edu (Shan D Duncan) writes:
>Anybody had this problem before?
     Yep.
>While in interlace mode the screen "bounces" a few times then the text
>loses its "sharpness".  The display looks like you need to go in and get
>a new prescription for the ol glasses or maybe its time you had some!
[Stuff deleted]
>I would like to know a little bit more about what COULD be wrong
>before I take it back.
     Ok. The 1084 I've been using does this exact same thing. Good interlace
screen for a while, then the electron gun on the second (interlace) scan
starts shifting downward until both sets of images (each interlaced frame)
are being displayed on the same row of phosphors. VERY ugly image. My best
guess is that the flyback oscilator is unhappy, but I'm not a tech, and I
don't even play one on TV. The 1084 is in the shop, and a Diamondscan is
on the purchase list.
     Does your monitor also begin high pitched whine-like noises? I'm told that
this is also caused by, at least in many cases, a flyback oscilator giving up
the ghost.
     At any rate, it is NOT the computer's fault. (At least, it wasn't in my
case.) I'm using another monitor for the moment (monochrome. Ag) and it works
just fine in interlace mode, no matter how long I leave it there.
                                                       - R'ykandar.
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