Help with Eumig Mark S 804 D projector

[Jay Schwartz]

I recently acquired a Eumig Mark S 804 D projector (dual 8 with 2-track recording/playback). I'm looking forward to seeing and hearing, for the first time in 45 years, the 50' student film I made with the school's projector that used both main and balance stripe! (I have other Super 8 sound projectors that do not play the balance stripe.)

It appears in good shape (though needs a good cleaning, and a new lamp).

A couple questions…

This evidently uses an EFP lamp. I see several listed online, at reasonable prices.

I'm intrigued by the Osram 54192-EFP/XMR16, which claims to have a life of 600 hours (rather than 50 hours). However, I wonder if this is at a sacrifice of brightness. None of the bulb reference websites I find list the lumens output. Is this lamp good to use in a projector (as opposed to a microscope or the other uses it is sold for)?

Also: I took apart the film gate, and am not sure I reassembled it correctly! The "film pressure pad" half (the front section, used with both gauges) came apart somewhat in my hands.

This assembly is NOT well illustrated in the manual (which I do have). Is there a repair manual or other exploded view of the parts that can be found anywhere (I did not find it)?

If that's not available -- could some kind soul show me photos of their pressure pad, from different angles? If you have the same (or similar) model, that is.

Thanks for any help with these issues!

[Brian Fretwell]

I imagine the lamp would have a lower colour temperature too, so no good for reddening prints. I was told in a shop that running halogen lamps at 90% voltage doubles their life.

[David Strelitz]

When you removed the gate, did you turn the thumb wheel so that the dot is at the top. Failure to do this will usually cause the claw pin to snap. If this happens you are in trouble as finding a repairer is difficult.
I don't think I have ever seen a pressure plate come apart. Post some photos.

[Jay Schwartz]

When you removed the gate, did you turn the thumb wheel so that the dot is at the top. Failure to do this will usually cause the claw pin to snap. If this happens you are in trouble as finding a repairer is difficult.
I don't think I have ever seen a pressure plate come apart. Post some photos.

I did heed the warning about the thumb wheel (there's a sticker stating this on the pressure pad). I did find another post on this forum that showed a pressure pad for this machine, so I think I figured out the orientation of the parts. I have not yet tested the projector as I need to set aside time to clean it, and also need a lamp to see how it projects. Will keep you posted on that.

[Jay Schwartz]

I imagine the lamp would have a lower colour temperature too, so no good for reddening prints. I was told in a shop that running halogen lamps at 90% voltage doubles their life.

Looking up specs for the long-life version, I do not see a color temperature, but instead a CRI rating -- "A color rendering index (CRI) is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with a natural or standard light source." - Wikipedia.

Osram's CRI for this lamp is 100, which is as good as it gets.

Osram also claim that "Lamps designed as HLX utilize Xenon gas in place of Krypton and provide up to 10% greater output over the life of the lamps." I THINK this means they are a little brighter than a traditional lamp (but I wish all of their lamps were rated in lumens and temperature instead of CRI and "output").

I think I'll just try one and see what happens.