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Article View: comp.sys.zenith.z100
Article #298

Re: flickering video on z100

#298
From: Elizabeth A. Weise
Date: Tue, 15 Dec 1992 13:25
26 lines
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In article <1992Dec15.001931.15612@u.washington.edu> parny@stein.u.washington.edu (Philip Arny) writes:
>I've got a z100 low profile unit; a few days ago, the screen started
>"shimmying" around; it's worst right after power up, but it continues as 
>the machine runs & warms up.  Any suggestions as to probable causes?
>I've got a spare system & monitor to try parts swapping on...

I noticed this on both my standard green screen and a Tandy CM5 color monitor -
just after I put an external modem on top of the Z, right next to the
monitor. Do you have anything with a transformer nearby? Other than that, I
did have an aging problem with my green monitor - horizontal drive would blink
out occasionally, and only a good whack would cure it.. then that stopped 
working. I ended up resoldering the flyback transformer to the main PC 
board - because of the weight it had worked a bit loose. I also tried 
swapping guts (all but the tube) with another monitor I had bought
surplus (with really bad screen burn-in) and that worked, for a while, till
the same transformer problem attacked it.
 
Hope this all helps!

-- Tom Moeller, under the guise of
--
-- 
****************************************************************************
Beth Weise / PhD Student / Dept. of Language, Literature, & Communication
Rensselaer Polytechnic Institute / Troy, New York
Weisee@rpi.edu / Beth_Weise@mts.rpi.edu
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Newsgroups: comp.sys.zenith.z100
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!rpi!weisee
From: weisee@aix.rpi.edu (Elizabeth A. Weise)
Subject: Re: flickering video on z100
Message-ID: <tzk2hj-@rpi.edu>
Nntp-Posting-Host: aix.rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy, NY
References: <1992Dec15.001931.15612@u.washington.edu>
Distribution: usa
Date: Tue, 15 Dec 1992 13:25:49 GMT
Lines: 26