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Author Topic: EFR Bulb Won't Fit in Elmo ST1200HD
Janice Glesser
Film Goddess

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


 - posted February 26, 2016 06:37 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
The bulb that originally came with my ST1200 projector finally went out today. No problem...I have another EFR Bulb from another projector. When I tried inserting the bulb it was too long and would not fit into the lamp holder. Are there different sizes for this lamp? Has anyone else had this issue?

The original EFR lamp was an Elmo Brand. You can see it is shorter than then other bulb (Platinum Brand).

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This is what the holder and socket looks like. It will not bend wide enough to get the longer bulb in [Frown] Do any of you ST1200 owners have this same holder/socket configuration? What bulb are you ordering?

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Janice

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

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Steve Klare
Film Guy

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From: Long Island, NY, USA
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 - posted February 26, 2016 06:49 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
That's very strange:

That code EFR is a whole set of specifications and one EFR should be the same as any other, no matter who made it or where.

I wonder if your new lamp is mismarked.

I've had EFRs from at least three different manufacturers in my ST-1200 and never had this problem.

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

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
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 - posted February 26, 2016 07:29 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Steve...Does your 1200 have this cage-like lamp holder? I measured each bulb and the overall length is approximately the same...about 1.70in. However, the Elmo bulb has longer pins and a shorter base. It fits into the holder easily...where the longer base bulb jams against the socket.

[ February 26, 2016, 09:14 PM: Message edited by: Janice Glesser ]

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Janice

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

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Winbert Hutahaean
Film God

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From: Nouméa, New Caledonia
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 - posted February 26, 2016 09:59 PM      Profile for Winbert Hutahaean   Email Winbert Hutahaean   Send New Private Message       Edit/Delete Post 
It seems your Platinum bulb is not designed for a projector, From the above picture I cannot see it has a small piece to tight the bulb to the lamp holder as opposed to the Elmo's as I have given a mark below.

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Winbert

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Janice Glesser
Film Goddess

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From: Sunnyvale, CA USA
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 - posted February 26, 2016 10:40 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
The Platinum bulb came from my Sankyo 800 projector. I've seen projector bulbs that don't have the nib on them and they seem to work fine.

I just ordered a bulb off Ebay. It looks like it has a shorter base and Winbert it does have the nib on it. However, I'd like to find a vendor that carries this model bulb. If anyone has this type of lamp cage on their ST1200... where do you buy your bulbs?

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Janice

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

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Steve Klare
Film Guy

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From: Long Island, NY, USA
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 - posted February 26, 2016 10:44 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
That locating tab is an interesting thing. It actually isn't in the EFP or EFR spec, and some brands of lamps have it and some don't, and I've even seen the same brand (Ushio) have it or not on the same lamps bought at different times.

-yet I've seen projectors (ST-800 in particular) that need it to be there or the lamp slips out of position and the picture gets dim. When I don't have it I usually put a tyrap in there to hold it in place

Janice, my ST-1200 was exactly like yours until fairly recently. I retrofit it with a different socket to improve contact with the lamp pins.

That Awful Elmo Lamp Socket

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

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Janice Glesser
Film Goddess

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From: Sunnyvale, CA USA
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 - posted February 26, 2016 11:06 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Your modification to the socket Steve explains why you haven't had any problems with different bulb sizes. BTW...do you have any pictures you can post of your conversion. I may have to look into modifying mine...but for now I just need a supplier for the shorter bulb type.

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Janice

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

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Andrew Woodcock
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From: Manchester Uk
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 - posted February 27, 2016 12:00 AM      Profile for Andrew Woodcock         Edit/Delete Post 
You would get much greater success with contact and universal fit Janice by changing out this type of lamp holder for a Bender & Wirth type of correct rating. The connections on these original ones can become very "sloppy" indeed and lead to much in the way of arcing as they age.

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

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Graham Ritchie
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From: New Zealand
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 - posted February 27, 2016 03:00 AM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Hi Janice

All the early ST1200M models had this lamp holder for the 150w EFR.
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The EFP 100w used in the ST180 and ST600 are as below.
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All the 100watt and 150watt lamps that I use have a locating lug on the lamp...hope this is of some help.

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Janice Glesser
Film Goddess

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From: Sunnyvale, CA USA
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 - posted February 27, 2016 09:55 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
I appreciate all the history and conversion suggestions, but Graham....What I'm asking is what is the brand of the EFR bulb you are using in the last picture you posted? That is the same holder that I have on my ST1200 (matches picture I posted). There are dozens of brands of EFR bulbs available and obviously they all won't work in this particular un-modified lamp housing. Other than Elmo...Which company makes one that will work?

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Janice

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

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Steve Klare
Film Guy

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From: Long Island, NY, USA
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 - posted February 27, 2016 10:45 AM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
'Morning Janice!

I'm looking at an Osram EFR right now and the distance between the rim of the reflector and the edge of the neck where the pins come out is 32-33mm. If one of the lamps you have that fits is the same size, then Osram is a good brand for you.

(It's got the reputation...)

My socket retrofit is different from Paul Adsett's. My socket is the same depth as the original one and sits entirely inside the cage (which presses on it). If I had an over-dimension lamp I'd have the same trouble you are having.

If you do the retrofit you need a premium quality socket. The first time I tried I used a cheapy and one of the contacts overheated and took a lamp's pin along with it.

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

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Thomas Smith
Master Film Handler

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From: Barking, Essex, UK
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 - posted February 27, 2016 12:09 PM      Profile for Thomas Smith   Email Thomas Smith   Send New Private Message       Edit/Delete Post 
Hello Janice
I have a 1200hd and the same style lamp holder
Never had any problems with bulbs but I only use osram
Purchased the projector in the late 1970s

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t.smith

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Graham Ritchie
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 - posted February 27, 2016 12:16 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Hi Janice

Steve is right about the Osram lamps they are very good. I have used over the years as in the above picture, until they are all used up are "Sylvania" in the ST1200 etc, never had a problem with those lamps fitting, however the Osram would be the way to go.

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted February 27, 2016 02:10 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
The Osram catelog has one 50hr EFR bulb listed in their catalog. It's the Product #54210 (EFR 64534 HLX).

Looks like Bulb America has it. I'm going to order it and hopefully it will fit. I'll let you know.

[ March 01, 2016, 07:26 PM: Message edited by: Janice Glesser ]

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Janice

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

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Steve Klare
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 - posted February 27, 2016 02:19 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
The Osram I was talking about before has "EFR 64534 HLX XENOPHOT" stamped on the glass, so it sounds like you have the real deal!

-price is good too!

I'm happy to use bulbs like this: they are used in a lot of modern equipment so they aren't a "specialty" or "vintage" item.

-that's a good thing in a consumable!

I walked up to an electrician's cart at work about a year ago and saw what looked like a projection lamp on top of it. I took a look: It was stamped "EFR". -yet I doubt anybody else in my department is projecting much Super-8 these days!

I was GOOD:

-I put it back where I found it!

[ February 27, 2016, 03:32 PM: Message edited by: Steve Klare ]

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

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted February 27, 2016 02:25 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Thank you Steve for the confirmation on the part number. That's all I needed. If it fits in your projector...It should fit in mine [Smile]

...and Steve...How about posting a thread on your conversion with a couple of pictures. It would be very helpful.

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Janice

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

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Steve Klare
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 - posted February 27, 2016 02:59 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
I don't know, Janice: it's not one of my most impressive exploits! (Really just my version of what Paul Adsett did first at any rate!)

-but I'll be glad to post a pic when I take the machine back out again.

I had to put everything away today: Mom's 85th Birthday celebration is tomorrow and pursuant to the peace accords in effect here the theater needs to go on hiatus until our guests head home.

(Won't take long to re-establish itself. -never does!)

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

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Andrew Woodcock
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From: Manchester Uk
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 - posted February 27, 2016 03:51 PM      Profile for Andrew Woodcock         Edit/Delete Post 
Happy special Birthday Mrs Klare in advance!

Janice, if you stick to the Osram lamp you and Steve were speaking of, you should notice a minimum of 10% extra brightness over all other manufacturers of these lamps due to the exclusive use of Xenon gas inside the capsule for this type of lamp.
I've always found them to be the very best example of these particular lamps.

[ February 27, 2016, 07:33 PM: Message edited by: Andrew Woodcock ]

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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
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 - posted February 27, 2016 05:20 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
A very happy birthday to your Mom also Steve.

...and don't ever feel your work isn't impressive enough to show. It works doesn't it?...and that's what counts. I'm not looking to be impressed...just for another alternative solution. There's always more than one way to solve an issue and the best solutions come from knowledge gained from multiple input. I'll look forward to seeing what you have done. [Smile]

[ February 28, 2016, 01:27 AM: Message edited by: Janice Glesser ]

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Janice

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

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Graham Ritchie
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 - posted March 01, 2016 01:07 AM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Due to a failure of the pins my only spare Sylvania lamp, I went out and bought a new Osram. However the Xenophot I landed up with has a different number, than the one you are buying, its a Osram 64634 HLX EFR 15v 150w. Length 42mm, Dia 51mm. It fits the ST1200 fine and the electrical socket. It looks same as the one removed except that the lamp does not have that little lug on it'

It would be interesting to know what the difference might be between both those Osram EFR lamps.

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Andrew Woodcock
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From: Manchester Uk
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 - posted March 01, 2016 02:52 AM      Profile for Andrew Woodcock         Edit/Delete Post 
Yours will be newer stock Graham. They no longer have the lug incorporated into the new stock Osram reflectors.

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

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Joe Balitzki
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From: Charleston, SC, USA
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 - posted March 01, 2016 06:25 AM      Profile for Joe Balitzki   Email Joe Balitzki   Send New Private Message       Edit/Delete Post 
Since Janice is our resident Bond Girl, I am not surprised that she has found a solution to the problem [Smile]
I have purchased Osram lamps because of the stated extra brightness. The extra increase in brightness is slight but every little bit helps.

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Movie Lovers Do It in the Dark

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Andrew Woodcock
Film God

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 - posted March 01, 2016 01:18 PM      Profile for Andrew Woodcock         Edit/Delete Post 
10% minimum over any other.

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

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Mathew James
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 - posted March 01, 2016 05:13 PM      Profile for Mathew James   Email Mathew James   Send New Private Message       Edit/Delete Post 
@Janice,

I have what looks to be the exact same lamp holder as yours.
I get my bulbs from this chap, and they are awesome-
http://www.rexim.com/pages/medical/lamps/RM-107.html

-best part is they are dirt cheap but last long. I bought 3 and am still on #1 so i cannot comment on length just yet.

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--
Cheers,
Matt 📽

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted March 01, 2016 07:31 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Matthew...Good to have another alternative bulb. However...If the Osram is brighter and it fits...I choose it. Bulb America currently has the Osram for only $4.66.

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Janice

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

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