Film-Tech Forum ARCHIVE: Need help finding a Dolby Digital part.

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Topic: Need help finding a Dolby Digital part.

Shawn Martin
Film Handler

Posts: 2
From: Somerset, KY, USA
Registered: Nov 2004

posted 11-18-2004 12:48 PM

Hello everyone, I'm a newbie here to the forum, I'll have a pic up soon, but for now I need some help if you could.

Our theatre manager just got fired for various reasons, and a big one was his totally incompetent treatment of our projector booth, I could literally write a book about this clown and his 'fixes' for that booth.

Anyway, what I'm trying to find is a socket for a dolby digital lamp. Please excuse me if I sound new, cause you know, I am hehe. Anyway, the smal halogen lamp that shines on the light pipe for the dolby sound head. There is a socket that plugs into this lamp. Well, my former manager when he would change that lamp he would pull on the wire leads instead of grasping the socket itself, the result is the he has managed to rip on of the wires out, and severly damaged the other on. We have it managed for the moment, but we really need to replace it, problem is though, the manager stole all of our parts manuals.

I have contacted National Cinema to see if they can track it down, but so far no luck, I don't think our rep understands the equipment enough to know what I'm talking about. Do any of you guys know the piece I'm talking about and do you have a part number that I can use to order a replacement?

I've done searches on the forum, and look through the public manuals, but since I'm a newb and don't meet the requirements I'm not yet able to search the level 1 and level 2 manuals.

Any help or guidance anyone may be able to provide would be greatly appreciated. We have problems with the Dolby cutting out during a show because the wire works itself loose enough to cause the lamp to go off.

Thanks in advance.

Shawn

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Adam Martin
I'm not even gonna point out the irony.

Posts: 3686
From: Dallas, TX
Registered: Nov 2000

posted 11-19-2004 02:36 AM

Moved to FHF.

Which reader model do you have? There's a manual for the Cat 701 right here on Film-Tech. Click "Manuals" in the navigation pane.

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Darryl Spicer
Film God

Posts: 3250
From: Lexington, KY, USA
Registered: Dec 2000

posted 11-19-2004 03:34 AM

is the wire pulled loose from the socket or down near the power supply. If you want to replace the socket you will most likely have to get a whole new power supply. However, you can simply solder each wire to each prong on the bulb it's self. Things will work great and you will not have to worry about socket problems. When it comes time to change out the bulb just unsolder the wires and resolder it to the new bulb. Best thing for the Cat 700's wich you most likely have from your description.

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Shawn Martin
Film Handler

Posts: 2
From: Somerset, KY, USA
Registered: Nov 2004

posted 11-19-2004 09:45 AM

We have a CP-500 processor, our sound head is a simplex 35 model 5 star. I'll take a pic of it and post for everyone to see if that would help. The unit was installed circa 1995. The wires were damaged at the point where it connects to the socket and is ok where it attaches to the power supply. I soldered the wires directly to the bulb leads as was suggested and it works great, but again thanks to loose our stupid ex-manager, he managed to remove and loose the heat shield that protected the bulb from us and us from it, so sometimes it becomes necessary for us to change the bulb between shows and in a few instances during a show. So if I could replace the socket to make that process fast and easy without having to heat up a solder iron would be great.

Also just for reference, the heat shield cover that mounts to the bulb housing was a Component Engineering, STRD-50 I believe been a while since I've seen it.

Guys thanks a bunch for your exeprience and advice, I very much appreciate it and look forward to getting know everyone as I need a lot of help with this booth to get it back into decent working order.

shawn

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999

posted 11-19-2004 09:01 PM

This is sounding like a Component Engineering STRD-20S sound head conversion...i.e. the EPT lamp is pointing upwards into a light pipe.

If that is the case...don't worry about finding a new socket (you could get one from Component Engineering) you are going to need a new basement reader kit. For you have an IR LED and they won't work with the new stupid cyan tracks. If someone has just plugged a visible LED into the old socket (it will work if you change the polarity) then you will most likely have LED failure due to inadequate heat sinking...the 20 series readers didn't have squat for heat sinking other than that tiny "Z" bracket the LED mounts on.

Steve

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Peter Hall
Master Film Handler

Posts: 314
From: London, UK
Registered: Dec 2000

posted 11-20-2004 12:41 AM

Isnt the pin spacing for the lamp the same as any halogen light fitting ? This being the case go down to your local electrical wholesaler and get any halogen light fitting and rob the socket

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Samuel Hynds
Film Handler

Posts: 50
From: Riverside, CA, USA
Registered: Aug 2004

posted 11-22-2004 09:45 AM

all you need is a new socket for your lamp. contact Component Engineering and get that socket. Dolby Digital tracks can be read by either white or red light readers, these tracks are already a dye track (w/o silver) - only the analog track still has silver in it (well some do). [Roll Eyes]

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Rick Long Jr
Expert Film Handler

Posts: 211
From: Toronto, Canada
Registered: Jul 2000

posted 11-22-2004 04:43 PM

quote: Samuel Hynds
all you need is a new socket for your lamp. contact Component Engineering and get that socket. Dolby Digital tracks can be read by either white or red light readers, these tracks are already a dye track (w/o silver) - only the analog track still has silver in it (well some do).

The only problem is that he will still be left with an infra-red L.E.D. for the analog. Might as well bite the bullet and get the SC-5 kit from Component. This upgrades both the analog and digital to red L.E.D.s.

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System Notices
Forum Watchdog / Soup Nazi

Posts: 215

Registered: Apr 2004

posted 05-06-2006 06:35 AM

It has been 529 days since the last post.

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Scott Christopher
Film Handler

Posts: 69
From: Adelaide, South Australia
Registered: Apr 2001

posted 05-06-2006 06:35 AM

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 05-06-2006 07:00 AM

I would call C.E. and get a replacement socket. Soldering the wires on and off a lamp is a bad idea.

Mark

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