Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!decwrl!pa.dec.com!shodha.enet.dec.com!alan
From: alan@shodha.enet.dec.com ( Alan's Home for Wayward Notes File.)
Newsgroups: comp.sys.dec
Subject: Re: A VR299 monitor with a magical cover! WHY?
Summary: A wild guess.
Message-ID: <3165@shodha.enet.dec.com>
Date: 17 May 91 18:54:05 GMT
References: <606@felix.Sublink.Org> <6150@mit-caf.MIT.EDU>
Organization: Digital Equipment Corp. - Colorado Springs, CO.
Lines: 35

In article <6150@mit-caf.MIT.EDU>, jarvis@mit-caf.MIT.EDU (Jarvis Jacobs) writes:
> 
> PROBLEM:  The VR299 monitor seems to fail on several occasions.
>           The monitor is completely dark and blank, e.g. no cursor.
> 
> THE SOLUTION:
>  
>           We have found that removing the VR299 monitor's plastic 
>	    cover reactives the monitor.
>
	This is just a guess of course.

	Perhaps the monitor is overheating and there is a temperature
	sensor that's turning it off.  By taking the cover off the
	heat dissipates and the sensor turns everything back on.

	Another possibility is that the cover is constricting some
	component or causing a short circuit.  Taking the cover off
	removes the problem.

	The problem does sound suspiciously mechanical.
	
> 
> WHY:      Could you give me a scientific reason
>           why the DEC's plastic cover affects the  VR299 operation?

	Apply the laws of thermodynamics...

>                                                jarvis
> 
>   ____   ____        * jarvis@caf.mit.edu *                 \____|||____/


-- 
Alan Rollow				alan@nabeth.cxn.dec.com