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This topic comprises 5 pages: 1 2 3 4 5
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Topic: Aftermarket LED replacment part #'s Does any one know any??
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Jason Beard
Film Handler
Posts: 9
From: Tulsa ok U.S.
Registered: Jul 2007
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posted 11-15-2008 11:44 PM
Hello all
Christos Mitsakis thanks!!!!
That is what I was talking about, I will have more info on that LED array very soon!!!!
Monte Fullmer,
That is a great idea, I have built many cables for DTS units, I think there is a pin out for DTS that Drops the - output as soon as it loses the time code But it still plays audio (there is like a 5 to 10 sec time frame from when DTS looses time code but it still plays Audio then it drops the signal to change The processor to Analog) If so Using a relay it would be simple to Tie this to the Reverse scan Power, it would power up the reverse scan before the DTS audio Drops (hence no audio pop)... I will Also call DTS to see if it is possible to Shut off the DTS reader Led without causing a error code until you start the Projector.. I will post some diagrams soon on how to shut down the reverse scan until you start the projector, that is easy!!! I bet that there is also connection in a SDDS that would also have a signal that would "output" to power up the Reverse scan before the sdds drops to analog.
I also just noticed that in the setup for the sdds that there is a check box to use the sdds back up track or to revert to Analog sound, I am going to change that setting tonight, I saw it Yesterday morning at 3 am but did not fell like Testing it (I needed to get some zzz's)...
Sam Chavez, Cool, U have the replacement Led assy for a little over $50 I have not had to mess with any of those yet, I figured that they would cost over $100 from Dolby, bacp., Ect. That is really not that bad at all... I would buy one If I needed it for around $50 just to get rid of the headache of knowing it should work right for the long haul.
Now with that being said, I am familiar with that type of led array, I Also Know that that they can be bought for $10 to $25 But I want to make sure that the specs are the same... Like I said earlier. I iwll have some more info soon on them... Also They sell that type of array at my local electronics supply store, if I had a screen down and needed to get it up, I could get it up only missing 1 or 2 show as opposed to a min 2 day down time by ordering (before all U say something, what I mean is if the screen goes dark at lets say the 7 P.M. shows, u cant order till the next morning, they overnight, U get it around 3 pm the next day then U have ti install it and re do a A chain, U missed 2 days...)
Thanks all, Great post!!!
Jason
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Monte L Fullmer
Film God
Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004
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posted 11-15-2008 11:45 PM
quote: Tony Bandiera Jr
Once customers have repeated bad experiences at your theatre, not only will they not come back, but you can bet they won't tell thier friends and coworkers anything positive about your theatre.
Agree on this one what Tony has mentioned here and want to comment on this even though this ALMOST drifts off-topic, thus forgive me on this one moment:
A friend of mine, who's father was in a retail business in a large "big box" chain, told me what his father told him about the "Rules of Seven":
1-If you can make SEVEN people satisfied in your business practices, at least ONE of them will spread the news around on how your business is and how you'll be treated.
2- BUT, if you just piss off just ONE person by not making sure that they're satisfied, or even failed in your business practices, that ONE person will definitely tell SEVEN others.
..and how many times have we've seen this attending some cinemas - large and/or small?
I ran out of fingers and toes trying to count. And you wonder why this form of business operation is being practiced.
quote:
I will post some diagrams soon on how to shut down the reverse scan until you start the projector, that is easy!!!
Great! Please do post diagrams so the lot of us can start saving on LED usage...and you're welcome. Glad I thought of that.
-Monte
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Tony Bandiera Jr
Film God
Posts: 3067
From: Moreland Idaho
Registered: Apr 2004
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posted 11-15-2008 11:55 PM
quote: Jason Beard
....I Also Know that that they can be bought for $10 to $25 But I want to make sure that the specs are the same... Like I said earlier. I iwll have some more info soon on them... Also They sell that type of array at my local electronics supply store, if I had a screen down and needed to get it up, I could get it up only missing 1 or 2 show as opposed to a min 2 day down time by ordering (before all U say something, what I mean is if the screen goes dark at lets say the 7 P.M. shows, u cant order till the next morning, they overnight, U get it around 3 pm the next day then U have ti install it and re do a A chain, U missed 2 days...)
Jason, while I can agree with the idea of minimal downtime, I repeat what I said in my first post on this thread as to the uncertainty of using a cheap part, even in an emergency...as now you'll have to replace that SAME PART TWICE, if you're wanting to ensure maximum life and relaibility. A $10-15 dollar part WILL NOT have the same specs in any event.
If you're concerned about minimum downtime, (and that's very admirable) how about ordering the RIGHT PART in advance? ![[Roll Eyes]](rolleyes.gif) What a concept. Again, the cost with all the things I've already mentioned factored in works out to pennies a day, cheap insurance against dissatisfied customers.
Monte, Brilliant post, that "Rule of Seven" is great. ![[thumbsup]](graemlins/thumbsup.gif)
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Jason Beard
Film Handler
Posts: 9
From: Tulsa ok U.S.
Registered: Jul 2007
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posted 11-16-2008 12:18 AM
Hello again all,
Ok I feel like a IDIOT!!!
Sam,
I was just reading in the dead beat forum (noting bad at all toward Sam or BACP) & found out U work at or own BACP Cool!!! We have 13 of your reverse scans Great product!!! Pls. Dont take offense to me trying to find lower priced led arrays... I do have 1 issue with the BACP reverse scans with the Higher frequency response, that I will post in the correct area (if I can find one)... PLEASE DO NOT GIVE ME ADVIDCE ON THIS ISSUE HERE, I want to keep this thread to LED Info!!!!
Tony, I do agree 100% with what U said about the cost Per day of the LED. I am mainly trying to get to the point of finding local parts & maybe trying to find Permanent parts that don’t cost $100 for something that on the component level cost $10 to $25, Why pay 300% markup if U don’t have to..... Also if no local parts are avl. and if u did have a screen go dark to no or really bad sound & if U had to order a LED for a dolby, sony, DTS, Christie, Ect. equipment First U have to contact your supplier, they have to find the correct part #, and in our case, Our suppler is 2 hrs behind us in time so we cant call them till 10 am, then they call the equipment manufacturer, Then they have to try to pull it and get it shipped overnight, so U are down even more time... It is all delays while u have a dark screen making U NO MONEY.... It is allot less work and easier if u can just order the part directly Locally or from someone like Allied Electronics, Carlton Bates, Ect.
Also, If I could buy a replacement part (not just LED's) that retails for $300 for $10 to $50 that part would be on my parts shelf For when I needed it!!!!!
To all:
I am happy to see so many post in here!!! But after reading the deadbeat forum I want to say this again. Please keep this thread to the topic of LED's!!!! In the Dead beat forum I noticed 5 or 6 ppl. or companies that were actually reported for having bad business practices in 11 pages, It seems it is easy in film tech to get off the topic ![[Smile]](smile.gif)
Thanks All,
Jason
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Sam D. Chavez
Film God
Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003
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posted 11-16-2008 11:01 AM
Various points here.
The readers can be powered up and down, no problem, but depending on how it's is done, the LED will issue a giant pop into the sound, maybe enough to break a marginal speaker. The reason is the LED comes up to full brightness in an instant, unlike an exciter lamp that comes up slowly. I'm sure some of you have noticed LED taillights on cars and how fast they come on and off, compared to the original bulbs used for this.
There may be other similar LED arrays to the Dolby LED, but I have not seen them. They definitely are not off the shelf as this is a specialty item made specifically for this application.
As to price, the figure I mentioned is the price I pay for 100's at one time, so I'm not selling at this price.
Lastly, to Jason's point about HF response, get in touch with me, I don't know the issue to which you refer.
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Steve Guttag
We forgot the crackers Gromit!!!
Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 11-16-2008 12:14 PM
Okay...lets review some points of fact and fiction here...
Catastrophic LED failure in the visible LED are near zero. That is, how many of you have had an LED just up and quit? Anyone? Anyone? I've had some of the early IR LEDs give me "snake eyes" where the middle portion died. I have had a partial failure on the visible reds but nothing statistically significant.
Next...which service company/dealer does not STOCK these LEDs the same way we used (and to some degree still) stock exciter lamps? Since the Dolby (USL) LED works in virtually ALL basement type LED based readers, even a single spare LED can be your emergency spare for all of your basement readers. Haven any digital readers? In a pinch, that LED can be moved to analog use to ensure 100% continuous sound reproduction...as such, any argument of needing a cheaper LED to justify stocking at least one is just plain bullshit.
Sam made the mistake of discussing his prices here and I suggest nixing that....one should discuss List prices on a public forum...normally "dealer" prices come with a "Confidential" agreement in the form of a non-disclosure.
The LIST price for the Dolby LED is $80.00...that is what is published....so you figure what an OEM pays for it, what a dealer pays for it and then what you, the end user pays for it...NOBODY is getting rich here on selling raw LEDs.
When people look at cinema equipment (including parts) and their prices, one needs to also factor in quantity...we are a TINY industry...selling something in the 100s is consider good, in the 1000s GREAT and in the 10,000s absolutely incredible.
So if a manufacturer sells a gear, lets say for $50. If it were 100% profit and they sold a whopping 500 of them that year...that would be a $25,000 part in gross profit. So who can live on that? Then look at the NET price and you should realize no one part is getting anybody rich in this industry. One can eek out a decent living handling many parts but again nothing that approaches "rich." If theatres had to live on the profit margins that equipment dealers live on, they would ALL be out of business. Most any of the equipment manufactures that have had staying power have also had business outside of this industry.
So an LED for $80 or less, get over it...it is cheap on the cost/hour basis. Even cheaper on the cost/dollar generated.
Why would one pay $80 when a $10/$15 version is available...well most wouldn't and probably shouldn't...if it existed. In the case of the Dolby LED...it is purpose built (package that has the array of LEDs, wavelength, illumination area...etc) and more than likely, there isn't a suitable replacement.
Mind you...there are TONs of cases of people here recommending aftermarket parts that are the exact same but for less money using traditional supply sources. As an example...the venerable Potts/Strong platter. The microswitches, motors, motor parts...etc can all be sourced by traditional sources...You are getting the exact same part (or even better, in some cases) and paying less while doing it. In the case of the Dolby LED...that is not the case however.
Steve
[ 11-26-2008, 09:21 PM: Message edited by: Steve Guttag ]
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Tim Reed
Better Projection Pays
Posts: 5246
From: Northampton, PA
Registered: Sep 1999
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posted 11-16-2008 01:48 PM
quote:
if no local parts are avl. and if u did have a screen go dark to no or really bad sound & if U had to order a LED for a dolby, sony, DTS, Christie, Ect. equipment First U have to contact your supplier, they have to find the correct part #
Oh, for heaven's sake, things cost what they cost. If buying a spare part is going to break the bank, that's probably indicative of a greater problem. ![[Wink]](wink.gif)
Steve is right; LED arrays don't normally just drop dead, so it's probably unnecessary to keep a spare in the booth. However, here's the proper way of looking at this in regards to critical parts: is the loss of revenue and goodwill of having a dark screen worth the few bucks saved not stocking it?
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