8mm Forum: GS800 static probs

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Posted by Chris Quinn (Member # 129) on February 27, 2004, 02:56 AM:

Hi Everyone.
I have just bought a GS800 and have noticed that when running a film I get a lot of clicking coming from the speakers, tracked this down as being static and coming from the rear roller guide in the film path, that’s the last and largest chrome roller.
When I put my finger on it the clicking stops, so I must be acting as an earth, anyone got any ideas how to stop this very annoying click. [Frown]

Chris.
Happens on acetate and worse on poly film.

Posted by Tony Milman (Member # 7) on February 27, 2004, 03:05 AM:

Chris,

Ear mufflers [Big Grin]

No I had the same problem and found that the static discharge was to blame. It came and went and Ian of Perrys , sorry now St Ian of Elmo, had identified the cause some yrs ago. Is your flywheel at the rear earthed in the same way as the GS1200 or ST1200 are? If not then you need to rig up an earth flex to the metal points and your problems will be no more.

Tony

Posted by Kevin Faulkner (Member # 6) on February 27, 2004, 03:11 AM:

Chris,Well known problem. How to cure it is another problem. You really need a screw which goes through the plastic and into the metal case behind the guide but I think this is probably difficult to achieve. A very fine single strand of wire soldered to the screw head to one side so that the screw head is still ok and then once its fitted back you can attach the wire to some piece of metalwork close by. Another thing that I did think of trying and possibly neater would be to use metal conductive paint from say Maplin Electornics. This could be painted on to the guide where the screw fixes and then painted to a point where the gude touches the metalwork which would earth it.
I think it's a case of surveying the situation very closely and try various methods to see which gives the best results.
I dare say you are finding it worse through track 2. most people with the 800 have said this is the case due to the higher amplification on this track. I had a GS800 years ago and mine didnt suffer from this problem very much but some say that it can be quite bad. I couldnt figure out why some were worse than others.
Let us know how you get on, Kev.

Posted by Chris Quinn (Member # 129) on February 27, 2004, 03:21 AM:

Thanks Guy's
Yes your right Kev, a lot worse on track 2, I did think of the wire idea to the screw and then the body of the projector, will give it ago, and will earth the sound drum as well as Tony suggested.
Thanks again,

Chris.
[Smile]

Posted by Tony Milman (Member # 7) on February 27, 2004, 07:11 AM:

Chris,

I also found that a good clean with the old furniture polish cured a lot of it. It was/is odd because sometimes I got/get it but even with the same film sometimes I didn't.

In the end I bought a 1200 (lol)

Tony

Posted by Chris Quinn (Member # 129) on February 27, 2004, 12:47 PM:

It's sorted,
I have fixed a fine wire from the back of the wheel guide and earthed it to the mainframe of the projector, via a screw not far away, that screws into the metal body, result, no more clicking. [Big Grin]

Chris.

Oh, and not visable.

[ February 28, 2004, 12:08 PM: Message edited by: Chris Quinn ]

Posted by Kevin Faulkner (Member # 6) on March 04, 2004, 06:29 PM:

Knew you would sort it Chris. You will be an expert on these Elmo's soon. [Wink]

Kev

Posted by Kurt Gardner (Member # 440) on August 25, 2005, 01:57 PM:

Here I am resurrecting another thread, but I found another solution. Above the metal roller there's an unused black plastic roller that's not involved in the film path. I simply changed out the metal roller with the plastic one and -- hey presto -- got rid of the clicking.

Does anybody see any problems developing with that solution?

Posted by Kevin Faulkner (Member # 6) on August 25, 2005, 05:09 PM:

Sounds good to me. Go for it Kurt [Smile]

Kev.

Posted by Jan Bister (Member # 332) on August 25, 2005, 06:30 PM:

This is a very interesting thread for me. As mentioned before, my little Chinon SP-330MV exhibits the same clicking during sound playback - and who knows, this very same solution may apply to my problem, too. Although repeatedly pushing and releasing the record button might do it too, I'll have to see. Regardless, it's pretty cool all the tips and tricks one can pick up for oneself around here even if they don't directly apply to one's situation. [Smile]

Posted by John Skujins (Member # 1515) on July 26, 2009, 09:46 PM:

Jan,

Did you ever fix the clicking sound problem on your Chinon SP-330? I'm having the same problem now on mine, but only on certain films, which made me think at first it was those films that had the pops on the soundtracks. But when the popping continues a couple of times after the film is stopped, then of course it is the projector. I would like to know exactly what to ground on this model (Chinon SP-330 magnetic).

It is really weird that it consistently happens with certain films and not others, but that it is the projector, not the films. Any tips?

John Skujins

Posted by Clive Carmock (Member # 347) on July 28, 2009, 06:39 PM:

I have the same problem on my GS1200 Xenon - but only when running an Optical print. I came to the conclusion that the static spark was being picked up by the optical phtocell as a flash causing the crackling.

My GS1200 is the version that has the extra blower transformer where the earlier model had an earth strap to earth the flywheel. I need to figure out a way to put in some form of earthing to eliminate it, working around the transformer.

Posted by John Skujins (Member # 1515) on July 30, 2009, 01:10 PM:

The film that was giving me popping sounds I cleaned with Filmguard and it solved the problem! I guess certain films get staticky and Filmguard eliminates static. Yay!

I now regret returning 2 cartoon films that I thought had pops on their soundtracks, but they probably just needed cleaning. Oh well, live & learn.

Posted by Antoine Orsero (Member # 41) on August 01, 2009, 02:35 PM:

Me, my films I clean and grease lightly with silicone oil: I have no more click, the movie is better without moving laterally on my Elmo GS1200 and ST 1200.

[Wink]

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