Film-Tech Forum ARCHIVE: Strong 1060 intermittent

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Posted by Fred Tucker (Member # 4482) on 04-07-2008, 02:33 AM:

What are symptoms of a bad intermittent? In two different houses I am experiencing issues, my GM who is not a booth guy by any means thinks it is the intermittent. The problems are
Projector #1: jumping out of frame randomly & often, not frame jumps on a differet projector. Film gate is set correctly.

Projector #2: Rectangular (blocky) scratches or shadows in the middle of the screen.

Thanks for the help.

Posted by Tim Reed (Member # 137) on 04-07-2008, 12:01 PM:

The multiplex mantra: anything and everything that can happen to a projector is always the intermittent. [Razz]

But short of that, is the framer drifting? If it goes out of frame suddenly, then I can't imagine anything other than a bad or mis-framed splice, or a section of ripped sprocket holes. You have to hand-inspect the print or be standing there when it happens to eliminate this as a possibility.

If it's drifting, then either the clamp springs around the intermittent itself, or the friction disc(s) on the framing shaft, are loose or worn. Or, as is often the case, you have a bad main drive gear, idler assembly, or a gear/pulley going out in the soundhead. The latter slowly hammers back up through the gear train and literally bounces the intermittent out of frame. But again, that's if it's drifting out of frame.

If the scratches are happening on every print played in that house, check the screws on all the sprockets. It sounds like one has backed out and is contacting the film to make those kinds of scratches. If it's only on the current print, it's possible someone mis-threaded and scratched it. It only takes one trip through a machine like that to destroy a print.