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Topic: Slide Projectors

John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000

posted 09-29-2000 09:38 AM

Thanks, Tom. Did something about the slides "fool" the autofocus sensor? Or did the circuit just fail?

Good suggestion on keeping on the tray dust cover.

------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com

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Tom Sauter
Expert Film Handler

Posts: 163
From: Buffalo, NY, USA
Registered: Sep 2000

posted 09-29-2000 09:55 AM

On Ektagraphic IIIAMT's that I have (unmodified) the shutter fools the projector into thinking the slide is horrendously out of focus. I end up turning on autofocus after the first slide is on the screen and everything works OK. On really old Ektagraphic I's (1970s) I'm pretty sure there's a transistor that eventually fails and either defeats autofocus or latches it on. I've just defeated the motor on these ...I've gotten my money's worth at this point!

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Bruce McGee
Phenomenal Film Handler

Posts: 1776
From: Asheville, NC USA... Nowhere in Particular.
Registered: Aug 1999

posted 09-29-2000 12:39 PM

Dustin: I'm not using my Ektagraphics in a theater (Oh, THATS why you like them...

)

They are rented daily to some of the most equipment operation-challenged people that I have ever seen. I have seen EXR lamps jammed into the lamp slot so badly that the socket disintegrated. The fan incident that I mentioned earlier happened when someone jammed a Bic pen into the blades because the fan was too loud to hear the speaker! (Yes, we charged the group $$$, and their slides were cooked)

Sometimes I wonder about new versions of older machines. Has Kodak cut corners with the newer Ektagraphics, or are they still built the same way they were when mine were built?

I had one many years ago that would toss out the lens after it got hot. I figured it was because of the boring slides that it was running. There was a leaking transistor on the sensor board. That and the fan are the only things I've had to do to one of these critters.

We own a total of 30 machines, and there are times when all of them are out on rentals. They always carry a spare lamp in the case, and all of our slide trays have the plastic covers. We dont use the lock rings.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 10-04-2000 01:52 AM

Oh well,
If there has to be slide projectors there should be a "This Theater Uses FilmGuard" slide stuck in place every now and then.
Mark

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Tom Sauter
Expert Film Handler

Posts: 163
From: Buffalo, NY, USA
Registered: Sep 2000

posted 05-31-2001 08:34 AM

I finally got around to servicing some of our Ektagraphic III's that have autofocus problems. The mechanism is a clever little solar cell that receives light from the lamphouse bounced off the slide. If light hits the left side of cell a + voltage runs motor in, if it hits right side - voltage runs motor out. When it hits the middle or shutter is in place no voltage results b/c slide is in focus.

You need special Kodak tools to adjust the mechanism but it only takes a few minutes once you get good at it. If you have a lot of these at your multiplex it may be worth it to get the service manual and the tools.

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Will Morrow
Film Handler

Posts: 91
From: Mt. Pleasant, MI, USA
Registered: Mar 2001

posted 05-31-2001 12:13 PM

Funny thing, this past week, my projector count went from 11 Victoria IV's to 22 total projectors. Oh yeah, the new ones are new Kodaks, but guess which ones are a bigger pain in my A$$? Also, don't you think that if projector number doubles, so should the salary of the Projection Director?

Just a thought.

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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000

posted 05-31-2001 12:17 PM

Will: If you mean you are having problems with all eleven NEW slide projectors, I suspect your problems may be with the slide mounting or the slide trays. What kind of problems have you been having?

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