Film-Tech Cinema Systems
Film-Tech Forum ARCHIVE


  
my profile | my password | search | faq & rules | forum home
  next oldest topic   next newest topic
» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » DTS reader led specs.?

   
Author Topic: DTS reader led specs.?
Rob J. Buskop
Expert Film Handler

Posts: 111
From: Rotterdam, the Netherlands
Registered: Aug 2005


 - posted 05-19-2012 12:21 PM      Profile for Rob J. Buskop   Email Rob J. Buskop   Send New Private Message       Edit/Delete Post 
I have a dead led DTS reader that I'd like to repair.
Can anyone help me with luminance and current specs or a specific type/brand for a good replacement? I understand extra luminance can be tuned to a lower value by adding a multiturn resistor, but some guidance as to the best suitable variety would be welcome.
Thanks for looking!

 |  IP: Logged

Marco Giustini
Film God

Posts: 2713
From: Reading, UK
Registered: Nov 2007


 - posted 05-19-2012 12:56 PM      Profile for Marco Giustini   Email Marco Giustini   Send New Private Message       Edit/Delete Post 
You should be able to find a second hand DTS head these days, with the digital conversion in progress many many many old processors like DTS and CP500 are just thrown away!

 |  IP: Logged

Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 05-21-2012 03:38 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
Honestly I would just try any red LED with the same physical size, they are really cheap and I don't think the wavelength spec, and to a degree, brightness spec, are all that critical. Search Mouser Electronics or Digi-Key.

 |  IP: Logged

Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
Registered: Mar 2005


 - posted 05-21-2012 07:30 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
I think Tony is right. Note that almost all LEDs have the same maximum current spec.Get one that is physically the same, with the light aimed the same as the dts.

Or just buy one from them. Louis

 |  IP: Logged

Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 05-22-2012 11:34 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Actually brightness was an issue I had to order a large quantity of a ulta bright red led when I used to rebuild them

 |  IP: Logged



All times are Central (GMT -6:00)  
   Close Topic    Move Topic    Delete Topic    next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:



Powered by Infopop Corporation
UBB.classicTM 6.3.1.2

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.

© 1999-2020 Film-Tech Cinema Systems, LLC. All rights reserved.