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From: hsu@eneevax.UUCP (Dave Hsu)
Newsgroups: net.micro
Subject: Leaving your Callan on...
Message-ID: <453@eneevax.UUCP>
Date: Sat, 14-Dec-85 17:29:28 EST
Article-I.D.: eneevax.453
Posted: Sat Dec 14 17:29:28 1985
Date-Received: Mon, 16-Dec-85 04:53:27 EST
Reply-To: hsu@eneevax.UUCP (Dave Hsu)
Organization: Imperial Widget Research Center, Kingdom of Maryland
Lines: 16
Keywords: well, how long do YOU do it?

Imagine my surprise at opening the basement door and smelling lots
of burnt-resistor odors.  Well, friends, my Callan baked a memory
board today.  Took out about 5 caps, 4 4164's, and 2 resistor nets.
Also, left a big brown patch on one side where the traces have sunk
below the surface of the board.  I'm airing out the room right now.

Question: How long do you think is safe to leave a machine on?  I tend
to leave this one one for about 2 months at a time, and it never runs
any warmer than when I leave it on for a few hours.  Power surge?  It's
plugged into a surge protector, and has a Corcom filter built in to it.
Time to go upstairs for some fresh air...

-dave
-- 
David Hsu	Communication & Signal Processing Lab, EE Department
		University of Maryland,  College Park, MD 20742
hsu@eneevax.umd.edu  {seismo,allegra}!umcp-cs!eneevax!hsu  CF522@UMDD.BITNET