8mm Forum: Elmo Sound Problem

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Topic: Elmo Sound Problem

Keith Ashfield
Jedi Master Film Handler

Posts: 997
From: U.K.
Registered: Dec 2006

posted January 23, 2007 10:33 AM

I have a problem with my Elmo ST1200. When I turn on the volume control it immediately goes from nothing to loud and then as you turn it up it gets very, very loud. Any ideas anyone?
Here's hoping,
Keith

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"We'll find 'em in the end, I promise you. We'll find 'em. Just as sure as a turnin' of the earth".

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Steve Klare
Film Guy

Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003

posted January 23, 2007 11:28 AM

As a wild guess (without benefit of schematics), I would say the volume control potentiometer is either open circuit or disconnected on the low side.

I'm sure Kevin can better enlighten us.

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All I ask is a wide screen and a projector to light her by...

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Tassos Laudas
Expert Film Handler

Posts: 102
From: Viersen Germany
Registered: Mar 2006

posted January 23, 2007 06:59 PM

Have you tried some contact treatment grease? This could possibly help.

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted January 24, 2007 01:18 AM

Yes that would be my first suggestion other than a compnent failure.

Kev.

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GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Keith Ashfield
Jedi Master Film Handler

Posts: 997
From: U.K.
Registered: Dec 2006

posted January 24, 2007 04:05 AM

Many thanks to you all for your advice. I will dismantle the control panel to give me better access and try contact grease. An electrician friend has given me a can of electrical maintenance spray called NC-123. He tells me that if I spray it on the exterior of the volume control, because of its "searching" qualities, it will find its way into the switch and clean and lubricate. The only warning he has advised is to make sure it doesn't get onto rubber belts or rollers,obviously because of its lubrication qualities. Any comments on this please?
Keith

--------------------
"We'll find 'em in the end, I promise you. We'll find 'em. Just as sure as a turnin' of the earth".

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Tassos Laudas
Expert Film Handler

Posts: 102
From: Viersen Germany
Registered: Mar 2006

posted January 24, 2007 07:01 AM

It won't get onto rubbers and rollers anyway as there aren't any accessible at this particular area.

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted January 24, 2007 07:58 AM

In my opinion you need to get any lube/cleaner on to the carbon track and contacts. You will find that where the connections come out of the control there will be an opening where you can safely squirt some cleaner/lube into the control itself.

Never heard of that product before. I always use Servisol

Kev.

--------------------
GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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