8mm Forum: Optical sound problem or not?

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Topic: Optical sound problem or not?

Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted February 02, 2013 01:31 PM

All my movies (just about anyway) has this annoying sound in the background. Magnetic films doesn't have this. How affected is the sound if either the lens for the optical is dirty/hairy or whatever or the film is dirty? There's a kind of rumbling. This is both on my Super 8 Elmo ST-1200D MO and my Bauer P7 Synchro 16mm. If it's dirty film, how to clean it?

Thanks

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Jean-Marc Toussaint
Film God

Posts: 2392
From: France
Registered: Oct 2004

posted February 06, 2013 05:54 PM

Have you tried cleaning the lens of the optical reader ? (Q-tip and rubbing alcohol are good for that too...)

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The Grindcave Cinema Website

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Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted February 06, 2013 10:37 PM

Actually not sure how to get to it ... It's behind a plastic cover I have no idea how to remove (I think it's behind there anyway)

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Lee Mannering
Film God

Posts: 3216
From: The Projection Box
Registered: Nov 2006

posted February 08, 2013 03:53 AM

Remove the exciter lamp (that’s the small one that light up/twists out) and you will see a small lens next to it. Give that a careful clean as instructed but finish off with a AIR DUSTER which will blow away and small particles from either side of the lens.

Same thing when cleaning the projectors gate, clean with a gate brush then finish with air duster.

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Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted February 08, 2013 06:34 AM

Thanks, will try that ...

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Jean-Marc Toussaint
Film God

Posts: 2392
From: France
Registered: Oct 2004

posted February 08, 2013 08:31 AM

Vidar, if annoying sound persist, change the exciter lamp on both machines. This - generally - solves a lot of things.

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The Grindcave Cinema Website

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Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012

posted February 08, 2013 09:52 AM

Will try that too. They do light up okay, but I have no idea if they should be stronger. Glowing if movie not running, lights up when movie runs. Will try cleaning, then change the lamp (16mm lamp is in the mail, so can't check that)

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