Color jittery in 1492 monitors/386s

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#409

From: STEPHEN
Date: Sun, 16 Dec 1990 04:41

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We have two zenith 386 systems, one is one of the original 386s with one of
the older large and heavy 1490 type monitors.  The other is a newer 386/20
with one of the newer lighter 1490 type monitors.  Both machines demonstrate
an intermitant condition in which in would appear that one of the color
guns goes out or begins to flicker.  Sometimes weeks will pass with no
problem and suddenly a day won't pass where we aren't fighting this.  One
machine is in Maryland and the other in New York, so it is nothing in the
immediate environment.  One machine has an ATI VGA-TV card driving the
1490 and the other has whatever the recent default zenith card is.

Has anyone any ideas about what might cause this condition and what can
be done about it?

Thanks.

Tim Stephen
Associate Professor
RPI

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From: STEPHEN@RPIECS.BITNET
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Subject: Color jittery in 1492 monitors/386s
Message-ID: <9012152347.aa14011@mc.lcs.mit.edu>
Date: 16 Dec 90 04:41:10 GMT
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