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Author Topic: Seeking Sound Advice on a Sankyo Sound 762
Ronnie Lane
Junior
Posts: 14
From: Richmond, TX, USA
Registered: Mar 2015


 - posted January 02, 2016 05:28 PM      Profile for Ronnie Lane   Email Ronnie Lane   Send New Private Message       Edit/Delete Post 
Just grabbed a Sankyo Sound 762 on eBbay for $80, and I figured I'd ask here before reporting any issues- what would make a Sankyo of this model not able to play sound? It has one other issue, tendency of the image to wander in and out of focus but the main issue I'd like to resolve the ease of repair first is its ability to play sound- the reason I bought the thing. It projects film fine, runs through well, projects alright aside the occasional focus shift, but the thing doesn't seem to read sound at all. The speaker makes a hum, so it's operational, and the same happens when I plug in a new one- my question I guess is what would be wrong?

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 02, 2016 06:42 PM      Profile for Janice Glesser     Send New Private Message       Edit/Delete Post 
May not be the projector...Have you tried running different sound films? If not...could be an erased sound track (...this has happened to me [Smile] )

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Ronnie Lane
Junior
Posts: 14
From: Richmond, TX, USA
Registered: Mar 2015


 - posted January 02, 2016 06:52 PM      Profile for Ronnie Lane   Email Ronnie Lane   Send New Private Message       Edit/Delete Post 
Tried two films, both have the same issue from the thing- they play but no sound. Trying to select 1 or 2 track gets me nothing, 1+2 gets me a static noise. Tried running output to an external projector, similar results. The two films came from different sellers, different places and one was clearly marked SOUND on the can so I can only assume it's something with the projector. The external output gets me white noise silence. (The films were a Ken Films color/sound Star Wars digest, and the rare Muppet Movie digest from the UK.

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Steve Klare
Film Guy

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


 - posted January 02, 2016 06:56 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
There's the old trick of working all the sound switches to try to break oxides, but since there is hum there's something else you can try here. (Eh! Work the switches anyway...)

It actually helps to be married! (Seriously...)

Turn the volume all the way up and move your wedding ring closer and further away from the sound head. This distorts the magnetic fields around the head and if the head is talking to the amp and the amp is amplifying, the hum should noticeably change.

(Any kind of ring works, but I'm not a big jewelry guy and it's what I have to work with!)

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

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Ronnie Lane
Junior
Posts: 14
From: Richmond, TX, USA
Registered: Mar 2015


 - posted January 02, 2016 07:03 PM      Profile for Ronnie Lane   Email Ronnie Lane   Send New Private Message       Edit/Delete Post 
Tested the ring experiment with my key ring, got some results. The hum went up and down as I went.

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Steve Klare
Film Guy

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


 - posted January 02, 2016 07:09 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
That's good!

This may have just gone from en electronic problem to a mechanical one.

Is there some mechanism pressing the sound stripe down onto the head? Without direct contact the head can't read the stripe.

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

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Ronnie Lane
Junior
Posts: 14
From: Richmond, TX, USA
Registered: Mar 2015


 - posted January 02, 2016 07:22 PM      Profile for Ronnie Lane   Email Ronnie Lane   Send New Private Message       Edit/Delete Post 
There is a mechanism, but it seems to be engaging when I crank to sound. The head mechanism does move up and I don't think there's farther for it to go- the dial feels sturdy and the head assembly does click into position. I can shift it a little bit up with a finger, but I tried that with film running and got no result.

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Maurizio Di Cintio
Jedi Master Film Handler

Posts: 977
From: Ortona, Italy
Registered: Jan 2004


 - posted January 03, 2016 11:19 AM      Profile for Maurizio Di Cintio     Send New Private Message       Edit/Delete Post 
Isn't this machine optical sound too? Your films should have magnetic sound instead. Try switching from OPT to MAG if this is the case.

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Maurizio

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 03, 2016 01:20 PM      Profile for Janice Glesser     Send New Private Message       Edit/Delete Post 
According to the old Super8 database. The Sankyo 762 is mag only.

marketed in 1977-78
super 8 mm film
lens: Sankyo Zoom f: 1.4 \ F: 15-25 mm
lamp: 80 W, 30 V, ELB
reel capacity: 180 m
projection: forward, reverse
projection speed: 18, 24 fps, by selector switch
film loading: automatic threading
sound: magnetic playback on both sound tracks
sound mode: mono, duo
amplifier: ?
amplifier output: 4 W (8 Ohm)
recording: magnetic on both tracks, sound-on-sound
recording level control: auto and manual
VU meter: yes
input terminal: Microphone, Line-in
input jacks: 3.5 mm diameter jack
output terminal: Monitor, Line-out, External Speaker (4 W, 8 Ohm)
output jack: Monitor, Line-out: 3.5 mm diameter jack; Ext Sp: 6.5 mm diameter jack
built-in speaker: yes
motor: magnetic motor
power source: V AC, 50/60 Hz
weight: circa 8,000 g
dimensions: 190 x 224 x 324 mm
made in Japan by Sankyo

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012


 - posted January 03, 2016 01:51 PM      Profile for Andrew Woodcock         Edit/Delete Post 
I can't think of any Sankyo machine that had the optical sound facility, come to think of it?

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"C'mon Baggy..Get with the beat"

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Dominique De Bast
Film God

Posts: 4486
From: Brussels, Belgium
Registered: Jun 2013


 - posted January 03, 2016 02:14 PM      Profile for Dominique De Bast   Email Dominique De Bast   Send New Private Message       Edit/Delete Post 
Sometimes sound disappears on a projector that has not been in use for a while then it comes back and you never understand what happened. At least, that happened with me :-)

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Dominique

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Mathew James
Jedi Master Film Handler

Posts: 740
From: Hamilton, Ontario, Canada
Registered: Dec 2014


 - posted January 03, 2016 02:27 PM      Profile for Mathew James   Email Mathew James   Send New Private Message       Edit/Delete Post 
Does he amp hum get louder with volume turned up? Could it be a volume control issue?

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--
Cheers,
Matt 📽

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Ronnie Lane
Junior
Posts: 14
From: Richmond, TX, USA
Registered: Mar 2015


 - posted January 03, 2016 03:23 PM      Profile for Ronnie Lane   Email Ronnie Lane   Send New Private Message       Edit/Delete Post 
This is mag as are my films, and the hum does get louder depending where I have the volume. That's part of how I determined the speakers were in fact working. (It does disappear entirely when sound is off.) Mostly what I'm fishing for infor for is to decide if I keep or attempt a return for my cash, particularly as the listing described it as 'working perfectly'.

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 03, 2016 04:14 PM      Profile for Janice Glesser     Send New Private Message       Edit/Delete Post 
Ronnie...if you have the option to return it, then if it were me...I would send it back. Have you alerted the seller about this issue? Resolving sound problems can range from removing a little corrosion from sockets to replacing sound board components. You thought you were buying a "working" sound projector...and this is not. [Frown]

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Maurizio Di Cintio
Jedi Master Film Handler

Posts: 977
From: Ortona, Italy
Registered: Jan 2004


 - posted January 04, 2016 07:53 AM      Profile for Maurizio Di Cintio     Send New Private Message       Edit/Delete Post 
Andrew, there were some Sankyo machines (probably for the local market) which had optical soun facility.

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Maurizio

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012


 - posted January 04, 2016 07:58 AM      Profile for Andrew Woodcock         Edit/Delete Post 
Oh ok Maurizio. I've just never seen one here in the UK.

It would be interesting to see a photo of some of these as they tended to use DC motors and electronic control circuitry.

I'd be interested in finding one if a 800ft double sprocket version with DC motor control existed.

It would certainly help cure the Wow issues so often associated with optical sound on Super 8mm.

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"C'mon Baggy..Get with the beat"

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007


 - posted January 04, 2016 10:01 AM      Profile for Maurice Leakey   Email Maurice Leakey   Send New Private Message       Edit/Delete Post 
Sankyo made optical sound models, the number was proceeded by OMS. I believe there were six models.
http://auctions.c.yimg.jp/images.auctions.yahoo.co.jp/image/ra170/users/8/4/6/7/atsushi5245-img600x450-1451637470x4uwo319990.jpg

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Maurice

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012


 - posted January 04, 2016 10:17 AM      Profile for Andrew Woodcock         Edit/Delete Post 
Thanks for that Maurice, very interesting. I can honestly say I have never ever seen one of these six models advertised for sale. I shall look out for them now thanks.

It would be interesting to see what the highest model featuring optical sound was.

Was there a 800 OMS for example?

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"C'mon Baggy..Get with the beat"

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007


 - posted January 04, 2016 11:24 AM      Profile for Maurice Leakey   Email Maurice Leakey   Send New Private Message       Edit/Delete Post 
Top of the range was the OMS-880ST. This was mag/opt, 800ft, 150w 15v lamp, mono/duo/stereo.

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Maurice

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012


 - posted January 04, 2016 01:25 PM      Profile for Andrew Woodcock         Edit/Delete Post 
Wow,thanks for that Maurice. I will keep a watch out then. I haven't seen anything like this up until now, but you never know.

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"C'mon Baggy..Get with the beat"

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Maurizio Di Cintio
Jedi Master Film Handler

Posts: 977
From: Ortona, Italy
Registered: Jan 2004


 - posted January 05, 2016 01:07 PM      Profile for Maurizio Di Cintio     Send New Private Message       Edit/Delete Post 
Andrew, all Sankyo Sound machines, regardless of being MAG only or OPT too, have electronically controlled DC motors.

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Maurizio

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012


 - posted January 05, 2016 03:42 PM      Profile for Andrew Woodcock         Edit/Delete Post 
Indeed Maurizio, but it's finding an optical machine, dual sprocketed, 800ft capacity minimum and D.C. electronically controlled that interests me.

For magnetic, I'm more than "boxed off".
For optical, there really are not too many choices that fit this criteria.

The model Maurice pointed out would have been ideal had it have made European soil. Unfortunately only in Japan it would seem.

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"C'mon Baggy..Get with the beat"

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Dominique De Bast
Film God

Posts: 4486
From: Brussels, Belgium
Registered: Jun 2013


 - posted January 05, 2016 03:51 PM      Profile for Dominique De Bast   Email Dominique De Bast   Send New Private Message       Edit/Delete Post 
Janice, did you make a copy of the database ?

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Dominique

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012


 - posted January 05, 2016 03:57 PM      Profile for Andrew Woodcock         Edit/Delete Post 
Hope she did Dom. Sure wish I had now! [Frown]

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"C'mon Baggy..Get with the beat"

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted January 05, 2016 06:09 PM      Profile for Janice Glesser     Send New Private Message       Edit/Delete Post 
Unfortunately guys...I didn't make a copy [Frown] . Anytime I find a description on Ebay from the Super8 database, I copy it and save it.

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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