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Topic: Oy Vey Such a Problem-Elmo St800
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Hugh Thompson Scott
Film God
Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012
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posted July 14, 2012 04:45 PM
Richard,I loved that video,two minds with but one thought,
because it is annoying when you can't put your finger on the fault.
When I cast my mind back I have had that problem with the
screaming and filings on the lens mount donkeys years ago,and
if I recall, it went on it's own,because I can't remember actually
taking anything apart.The only thing I can think of and I did bend it slightly,and that was the soft alloy guard for the pulleys
I might even have sprayed some WD40 in there,but it has stopped.I would check that the claw arm is not catching the
shutter itself.Have a look at the blades and see if there is a mark
on the lens side of the blade.It might be possible to alter the
position of the shutter,but I would advise against it,that is for
the skills of the repair man.Polishing guides and fitting extra rollers is one thing,but to get into the mechanics is for someone
who has the skills and tools for the job.It might pay just to give
the moving parts a little squirt of WD and leave it to run for a
short time.Best of British.
PS Hope those windows are fixed.
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Hugh Thompson Scott
Film God
Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012
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posted July 15, 2012 07:27 AM
I have been giving your problem some thought Richard,and I
have come to the conclusion that your unstable pictures problem
could be the clue,it might be that the shutter is catching the
claw mechanism,hence the noise and metal dust.Like I said I did
have a similar problem a long time ago and it went as mysteriously
as it appeared,probably the parts that were touching just wore
themselves in.Happily the ST1200s are fine,but it was one, can't
think which, that for a short time had a similar problem.If two
surfaces are catching,it can't be much or the projector would
jam,I personally would switch it on and leave it for an hour or
two, and let nature take it's course.Chances are that the
machine will eventually sort itself out.Give it a go,it's better
than a second journey through the window.
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Richard Bock
Expert Film Handler
Posts: 239
From: El Cerrito,CA,USA
Registered: Jan 2010
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posted July 18, 2012 10:09 AM
Excellent. That did it. I took Janices' advise. Stare at the inside of the projector for about 15 minutes, which I did. Then take others advice, move ever so gingerly, the fan encasement and I literally moved it like hardly at all. And that did it. What threw me off was that the shavings of metal were on top of the lens encasement. Not even close to where the rubbing was. I'm still a little mystified but I guess the fan, as one poster said, blew those shavings on top. Defying gravity and reality.
Now if I can only fix the booming sound problem. The dial for volume has little effect on my sound. It's either loud or booming with a slight hum. This won't be an easy fix I expect. It will probably need an expert but, any suggestions greatly appreciated, and by the way, thanks to all who posted to help me.
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Hugh Thompson Scott
Film God
Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012
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posted July 18, 2012 10:33 AM
Hello Richard,glad the noise is sorted on the projector,regarding
the sound on your machine,the hum could be caused by the
"Hum bucking coil",that is located behind the loop former of
the machine.It is a little yellow fuse like contraption with a wire
coming out either end,it may be touching something that is
causing the oppressive hum,just lightly move it away,so that it
isn't touching anything.
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