Path: utzoo!attcan!uunet!zaphod.mps.ohio-state.edu!caen!jgeld
From: jgeld@caen.engin.umich.edu (Jon Geld)
Newsgroups: comp.sys.dec
Subject: Re: VT1000
Message-ID: <1990Dec11.175248.452@engin.umich.edu>
Date: 11 Dec 90 17:52:48 GMT
References: <9551@cpoint.clearpoint.com> <6362@mace.cc.purdue.edu>
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Organization: University of Michigan Engineering, Ann Arbor
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In article <6362@mace.cc.purdue.edu> nvi@mace.cc.purdue.edu (Charles C. Allen) writes:

>All 5 of our VR262 monitors show "warped and slightly twisted"
>pictures.  We convinced DEC to try replacing one of them (twice) to no
>avail.  If anyone knows how to get these things looking good on *any*
>setup (VS3100, VT1000), please let us sufferers know!  (Yes, we've
>removed them from any nearby RF sources and placed aluminum/copper
>shielding with no appreciable effect).
>
When we have had this problem with our VR260's it could be cleared up
(to some degree) by adjusting the pots on the Deflection module.
Access could be gained by taking the cover off the monitor (four hex
screws in the back) and then sticking a long thin screwdriver down the
appropriate holes along the top of the monitor (they are labeled).
I've got to believe that something along these lines has been provided
on the VR262, although a quick look through the plastic case on mine
shows that the access holes are not in the same place.  Using this
method we've been able to reduce the distortion on the tubes, although
it never goes away completely.  I'm surprised your DEC rep didn't do
this before replacing the monitor.

==============================================================================
Jon Geld				| geld@mail.physics.lsa.umich.edu
Sys Mgr, Physics			! MICH::GELD
University of Michigan			| geld@umiphys.bitnet
==============================================================================