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Topic: 16mm Frame Issue HELP
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Jean-Marc Toussaint
Film God
Posts: 2392
From: France
Registered: Oct 2004
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posted June 04, 2012 08:23 AM
Brannon, it *could* be a case of ghosting (hard to tell without seeing the projector in action). That means that somehow, your pull-down claw is no longer in sync with the blocking of the gate by the shutter. I'm no expert with the B&H 550 but if you can disconnect power, open the machine and see if you can advance the film manually (there's sometimes a knob either at the back or at the front for that matter) you will be able to check it by yourself. Remove the lens and lamp, get a small light source and shine it where the regular lamp is usually located. Look down the lens barrel towards the gate with a film loaded. Advance film manually. If you can see the film being pulled down before or after your view is being blocked by the shutter, then that is your problem. You need to unfastened the shutter from its axle, turn it a fraction, refasten it and see if its blocking the view of the pulled down action. Do this as many times as necessary until you find the proper alignment.
In hope your shuttle (the whole assay that gives its up and down movement to the claw) or the claw itself aren't damaged. Clean the claw area as something (dust, solidified grease, piece of broken film...) might have got stuck in there, causing the inconvenience.
You can have a look at the service manual (see download section on the left) but it's not very helpful.
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The Grindcave Cinema Website
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Hugh Thompson Scott
Film God
Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012
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posted June 05, 2012 09:06 AM
Brannon,you must have a loop of film above and below the film
gate for the projector to work,otherwise as I suspect,looking at
your picture you are dragging the film through the projector
and doing no good to either.The picture shows the film is snug
against the auto guide and it should be between said guide and
the upper loop former,so forming the desired loop that enables
the projector to show successive frames,otherwise the result is
a blurred picture and strained sprocket holes.Can you thread
the projector,does the auto thread work?Does the auto loop
former work,that is positioned below the picture gate and it
should operate if the loop is lost.You must check these points
before attempting anything else.i do not recommend you start
to dismantle any parts of this projector if you do not have the
skills.
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Hugh Thompson Scott
Film God
Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012
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posted June 05, 2012 07:52 PM
You're more than welcome Brannon and thankyou.A little bit of
advice if you want to give any shows,get to know your projector,
try lacing it up by hand and unlacing,with a piece of scrap film.
This can be very usefull if the autothreading plays up.
Get yourself a 1/2 inch or 1 inch paintbrush (new) and wrap
some tape around the metal ferrule,so it does not scratch
anything,and use it as a cleaning brush for your projector,to clean
any debris from the gate and guides between reels.Also a little
tip,give your machine a good ten minutes after showing film
time to cool before moving it as this gives your lamp a longer
life.
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