P3D Re: TDC Project-or-view

[Steve Berezin <sbere@xxxxxxxxxxxxx>]

Bob Wier wrote:
> 
> At 9:42 PM -0600 on 5/25/98, Steve Berezin wrote:
> 
> |
> |1a.  The carrier does not quench light between slides like
> |the carrier in my Compco Triad.  That is the screen did not
> |go dark between slides; it looked like when you forget to
> |put a slide in the projector carousel and the screen goes
> |very bright.  Is this normal or in the carrier missing a
> |piece?
> |
>    That is one of the main problems with my POV - there is a *lot*
> of light leakage, especially from the "back" carrier slot when you
> have no carrier in it. I resorted to taping some cardboard in the
> right places to try to block some of that.

I saw the mention of that in the archives, however, this is
more serious than just that. I did see the effect mentioned
in a posting by Elliott Swanson calling it light shutter, or
Selectron Gate hang-up.  The black gate which is the light
shutter somehow gets blocked up.  Unfortunately, the remedy
he mentioned involves a sophistication of metal working
which I am not comfortable performing.
> 
> |2.  An earlier posting by Dr. T (Nov 17 1997) mentions an
> |even earlier posting by Harry Poster as to giving tips with
> |how to clean the projectors.  I could not find the earlier
> |posting in the archives.  Does anyone have the digest
> |number?
> |
>    I can't find it either - unfortunately searching on "project" or
> "view" (as well as "TDC") gets you a LOT of hits...

I searched on project-or-view and project or view and
checked about 56 hits but did not find the one in question. 
When I searched "Harry Poster" I got hundreds of hits.
> 
> |3.  My POV appears to need a new cord.  Does anyone know a
> |source for these?  The existing cord looks like it was
> |sculpted from an old coffee maker cord and will need to be
> |replaced.
> |
>   This is a little tiny plug - amazingly small for the wattage it's
> supposed to carry. However, on April 15th of '97 George mentioned that
> Harry P. made a good suggestion to him on how to handle the replacment
> (but he didn't say what it was!).

I read that too.
> 
> There were *very* extended discussions about the same time on what
> kind of material to use for a replacement screen...
> 
>               Bob Wier
>      mailto:wier@xxxxxxxxxxxxxxxxx
>    12:47 AM Tuesday, May 26, 1998

Thanks for the info.  
-- 
Steve Berezin
sbere@xxxxxxxxxxxxx


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