🚀 go-pugleaf

Jim O'Brien worries about flicker on his Rainbow screen. I have
occasionally experienced a jitter which seems to be a pure video problem
within the VR201 monitor, and has nothing to do with the power supply
connector. If you feel venturesome, you can open the VR201 and make sure
that everything within is well-seated -- it's pretty shabbily made
inside and I wouldn't be at all surprised to find a bad contact of some
kind.

Once you have the monitor open, by the way, it often pays to adjust the
screen brightness, focus and geometry using the marked presets, because
these are often badly mis-adjusted. It's also possible that the jitter
(if it's the purely-horizontal character jitter that I have seen), comes
from a dirty preset pot, which you can tackle at the same time.

The usual cautions: don't mess around inside a video monitor unless you
have some idea how to deal with high-voltage electronics. But don't pay
DEC to work on your VR201, either -- I've never found a DEC service tech
willing to go inside the monitor; they just replace 'em. Comes from
being trained on 5-volt electronics, I guess.

					Tony Movshon

Internet:  movshon@nyu.edu
Usenet:    movshon@cmcl2.uucp or {ihnp4|allegra}!cmcl2!xp!tony
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