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Article #767

power-supply problem => screen shrink (briefly upon login) on 1186 ?

#767
From: Eric Ho
Date: Tue, 20 Feb 1990 21:21
25 lines
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Someone told me that this is usually a power-supply problem -- namely, after
being in idle mode for a long time (say over 1 day), you'll see the screen
suddenly shrink briefly and then expand back to normal (accompanied by a small
cracking/static noise) when you just logged into the system (because switching
from being near-dark to total brightness will take a lot of power and if the
power-supply is not up to it, you'll see this problem).

So, I called Xerox up.  And they said that this could be a problem.  But they
said that there're 3 power-supplies -- 2 in the chassis and one inside the
monitor/console.  The one inside the monitor is called the high-voltage
power-supply.  Now, doesn't anyone know that it is usually this particular
power-supply.  The only problem is that this power-supply will have to be
replaced along with the monitor -- in other words, we'll need to replace the
entire monitor if the culprit is indeed this high-voltage power-supply.  Does
anyone have any idea how much it'll cost to replace this kind of monitor (on a
time & material basis) ?

Any pointers appreciated.


--

Eric Ho  
Princeton University
eho@clarity.princeton.edu
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!brunix!phoenix.princeton.edu!eho
From: eho@clarity.Princeton.EDU (Eric Ho)
Newsgroups: comp.sys.xerox
Subject: power-supply problem => screen shrink (briefly upon login) on 1186 ?
Message-ID: <EHO.90Feb20162111@word.Princeton.EDU>
Date: 20 Feb 90 21:21:11 GMT
Sender: news@brunix.UUCP
Distribution: comp
Organization: Cognitive Science Lab.  Princeton University.
Lines: 25