8mm Forum: Elmo ST-600 M schematics

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Topic: Elmo ST-600 M schematics

Mika Parik
Junior
Posts: 2
From: Kouvola, Finland
Registered: Jun 2016

posted June 08, 2016 02:36 AM

Good day everybody

I've got an Elmo ST-600 M which has problems with the sound. Does anyone know where I could find the schematics for this projector?

Thank you in advance!

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Tom Photiou
Film God

Posts: 4837
From: Plymouth U.K
Registered: Dec 2003

posted June 08, 2016 03:47 AM

Hi Mika, is this one any good, i do have the full workshop manual with all the electrics diagrams so if you want any more please PM me so i can send you some in a better quality ones. [Wink]

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Steve Klare
Film Guy

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

posted June 10, 2016 04:05 PM

Mika,

There is a classic first thing to try when an Elmo has problems with sound.

Disconnect the machine from power, work all the sound related switches, plug into and then disconnect from all the sound related jacks. This goes double for the red recording key. Repeat these about ten times each. Then try the sound again.

This works because the contacts build up insulating oxides that operating the switches break. It works a surprising fraction of the time, especially with machines that are just out of long term storage.

It doesn't always work, but then again you don't want to find out it would have after your projector is a pile of parts on the kitchen table!

(I bet 30 years ago every projector repair place on the planet knew this one!)

Tom, would you consider sending you manual into be posted in our manuals section?

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

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Mika Parik
Junior
Posts: 2
From: Kouvola, Finland
Registered: Jun 2016

posted June 13, 2016 12:33 AM

Hey,

I used to have sound, although it was humming quite a lot. During transportation something seemed to have broken inside the machine and now the sound is completely dead, not even a hiss. One of the old solders must have broken off.

Thanks for the tip anyway!

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Mark Petrini
Junior
Posts: 2
From: New York, NY, USA
Registered: Mar 2018

posted March 17, 2018 02:36 PM

Hi all, new to super 8 and to the forum. I bought a Elmo st 600 on eBay which was sold as “excellent “ condition. It stopped working almost immediately. Wiggling the three wires from the potentiometer cuts the motor off and on; holding them a certain way allows me to play video but the reels chug along in a staccato movement, the front reel not keeping up and film piles up in front of the projector. I’m feeling ambitious and wonder if changing the potentiometer and checking the belts would a reasonable start for diy repair? I’m not and electrician or anything, can solder a bit. You can also tell me I’m crazy and tell me to take to an expert. Thank you

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