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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Feb 16, 2010 9:54 pm Post subject: |
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Guys!
We sold a pair of Turbo Talarias to a college in Michigan; these were three monochrome light valves in a stack; the customer wanted to light up twelve foot screens in an atrium lobby in near full daylight, kinda nuts........
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drice1234
Joined: 07 Oct 2006
Posts: 1309
Location: Allen, Texas
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| Posted: Tue Feb 16, 2010 10:21 pm Post subject: |
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It's a good thing that I am married or I would have picked all of these up by now. I am working on my cube mate who has an empty house that he is planning to someday renovate to let me store these at the house. I just can't think of anything to do with them to remotely justify having almost 3000 pounds of projectors.
Dan
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Tue Feb 16, 2010 11:14 pm Post subject: |
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| drice1234 wrote: | | I just can't think of anything to do with them to remotely justify having almost 3000 pounds of projectors. |
Ummm... Two problems...
A) You need a justification?
B) Just having a truckload (literally) of crazy-ass industrial projectors that were worth north of a quarter million dollars not that long ago for the low, low price of $500 total isn't justification enough?
That's it... We're revoking your CRT geek membership card. 
SC
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Tue Feb 16, 2010 11:17 pm Post subject: |
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Just kidding, Dan... I know you want mean, actually... There are a couple of the big BarcoReality LCD's nearby that I can pick up for crazy cheap... But, they're damn near 5 feet long and 200 pounds... Narrow, but longer than a G90, and almost as heavy.
Damn, I wish I owned a warehouse... Then, I could fully embrace the pack-rat side of my personality that my current (small) house keeps in check. 
SC
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Wed Feb 17, 2010 12:50 am Post subject: |
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Hehe
"Video Hoarders", sounds like a good reality TV show. No one does it like Curt though............
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dmarnold
Joined: 18 Jan 2010
Posts: 73
Location: St. Louis, MO
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| Posted: Wed Feb 17, 2010 3:39 am Post subject: re: curt |
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yeah curt, ...... what a HOARD!
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enjoy today, for change is on the way
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jsawinski
Joined: 29 Mar 2010
Posts: 3
Location: DFW, Texas
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| Posted: Mon Mar 29, 2010 8:40 pm Post subject: Hughes/JVC ILA340SC Projectors in North Texas |
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Hi all! . .
I just looked at them and made a deposit. Fortunately I don't live far away. They seem to be complete and are definitely 340SCs, but stored in uncontrolled warehouse space for almost a year. All are on roller carts, and were said to have come from a Church, although I can't imagine which Church would spend almost $1M on projectors. I couldn't tell for sure, but it looks like the lenses are the shorter versions, at least not the 7:1 types that usually shipped with these. The amount of spares is staggering! At least a full 5X8' trailer load, just by themselves; boards, lamps, lamp housings, power supplies, and, of course, the most critical parts; CRTs and SC ILA panels! I'd love to know the real story. . .
I was at InfoComm in Dallas when the Hughes geeks unveiled the very first prototype 300 series, showing 'True Lies' with a prototype Faroudja 400 box in full convention center lighting. Awesome! Scared the crap out of all the CRT exhibitors! Since then, I've always wanted to own one, just for the heck of it. I've worked in large system RF network service, broadcast and video post, and on a few Barco CRTs, but nothing like this. Kinda like hugging an Ampex 1200 Quad VTR, or a Gates television transmitter.
If anyone has some thoughts on market appetite for these, the parts or spares, please weigh in. My thoughts are to put two of them fully operational, keep a bunch of parts, then sell all the rest. I think the last time one of these hit eBay, it was in L.A. and went for around $400. Maybe two years ago? Don't know if it worked. . .
Best Regards,
John
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drice1234
Joined: 07 Oct 2006
Posts: 1309
Location: Allen, Texas
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| Posted: Mon Mar 29, 2010 8:53 pm Post subject: |
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Let us know when you get one operational. I would definitely like to come take a look.
Dan
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Mon Mar 29, 2010 9:02 pm Post subject: |
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Guys!
Interesting technology. There are actually three infra-red crts in the rear of the Hughes, each tube fires thru a small lens to one side of the lcd puck, creating an image on the other side which is whacked by the arc lamp spectrum broken into red green and blue by dichroic mirrors. 240 volt operation and near 400 pound each.........
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donaldk
Joined: 17 Jun 2008
Posts: 308
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| Posted: Tue Mar 30, 2010 1:08 am Post subject: |
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The early monochrome Eidophor's were used with an external colorwheel for the CBS color demo's back in '52, that's where the colorwheel misconception may have come from. The first three channel color Eidophor was launched in '61, from what i've read.
The initial Talaria's where two channel green magenta machines.
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jsawinski
Joined: 29 Mar 2010
Posts: 3
Location: DFW, Texas
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| Posted: Fri Apr 02, 2010 7:33 pm Post subject: Hughes/JVC ILA340SC Projectors in North Texas |
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The current owner and I are still working out the logistics of moving almost 5K lbs of stuff to somewhere close. Out of curiosity, does anyone else in this forum have an interest in owning one (or two)? Any thoughts on what they're worth?
John
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RaWsHaRk
Joined: 01 May 2009
Posts: 131
Location: Finland
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| Posted: Sat Apr 03, 2010 6:34 am Post subject: |
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they are worth whatever you paid for them. supply and demand, just like selling anything else.
if I lived close, sure I would have interest for another toy..cool find if you have the space for them.
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David_Web
Joined: 02 May 2007
Posts: 418
Location: Sweden
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| Posted: Sun Apr 04, 2010 4:30 pm Post subject: |
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I want one, but living in Sweden ruins that part =(
Would be nice to have one or two ILA panels though. Wonder how they are driven. Maybe you could scope the connector.
It would be neat if you took pictures of the internals, not so many seems to be around.
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drice1234
Joined: 07 Oct 2006
Posts: 1309
Location: Allen, Texas
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| Posted: Sat Jun 12, 2010 2:39 pm Post subject: |
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Did you ever get one of these fired up?
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Sat Jun 12, 2010 5:51 pm Post subject: |
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| Tim in Phoenix wrote: | Guys!
Interesting technology. There are actually three infra-red crts in the rear of the Hughes, each tube fires thru a small lens to one side of the lcd puck, creating an image on the other side which is whacked by the arc lamp spectrum broken into red green and blue by dichroic mirrors. 240 volt operation and near 400 pound each......... |
AmPro's implementation of the LV design used a 3" diagonal IR CRT with a fiber optic faceplate, glued with transparent epoxy directly to an LCD. On the CRT side of the LCD, the LCD has a layer of hydrogenated amorphous silicon,
which has the property of generating an electric charge when hit with IR light. This electric charge thus exactly
replicates the CRT's output in the LCD. The LCD is slightly larger than the CRT face and has no pixel structure. It has
just a pair of electrodes for biasing the LCD cell. The bias voltage and frequency affect how quickly the LCD reacts
and also can have an effect on its resolution capability.
Once you get past this point in the system, it's a lot like an LCD projector, only larger than most.
I have one of the AmPro LV assemblies (CRT and fiber optic faceplate and LCD panel) on my shelf of interesting
odds and ends. I've also seen one of those CRTs in operation with no LV attached. You DO see an image, but
it's a dim red picture. It's really a very bright near IR picture, but our eyes don't see that.
These things killed AmPro, incidentally. They made way too many of these LV assemblies with LCDs that failed in
the field. That got super expensive to replace as they had to replace the entire assembly including that expensive
little CRT. It cost over 5000 dollars EACH to AmPro to replace them under warranty. I know, because I saw
the paperwork for some of those jobs.
Interestingly enough, I developed a simple procedure for removing a defective LCD from the CRT without doing
any damage to the CRT, allowing a new LV to be glued to the CRT and thus saving that expensive CRT. But since
(A) Ampro was already out of business and liquidated and (B) I never worked for AmPro, it really didn't matter.
I figured out how to do it since I had some bad LCD panel/tube assemblies and also had a few spare LCDs which
were reportedly the "good" ones.
The method is really very simple. It should not have cost much to do it.
Put the CRT with bad LV into a metal pan, face down, and add acetone until the LCD is completely covered.
Let it sit for two hours.
Carefully separate the LCD from the CRT with the aid of a single edged razor blade, being careful not to
scratch the CRT face.
Use a clean cloth and more acetone to remove all traces of the old adhesive.
Obtain a small vacuum chamber and get some 3M DP100 Plus Clear epoxy adhesive, which is IR-transparent
and may be what AmPro used to assemble the LV assemblies originally. It does react to acetone in the same
manner as what was originally used so I tend to think this is the same stuff, or at least is a work-alike product.
Apply adhesive to the CRT face and glue the LCD on, being careful to center it up as per the original. This is
easily done if you use the original frame and mounting hardware. Place assembly in the vacuum chamber
and pull a vacuum on it. Let it stay under vacuum for half an hour and then release.
Let the adhesive finish curing and reassemble the LCD/CRT assembly.
Where to get the LVs these days? Franz Gillich, of Ampro.de got the last production lot of LCDs, which
were reportedly free of the defects that plagued the earlier types. If someone wanted to make a go at restoring
an AmPro LV machine to service and it had bad LVs, this is how you'd do it.
Sometimes I wonder what might have happened if I'd been working for Ampro a few years before all that trouble
started. I might have earned my paycheck.
CJ
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jsawinski
Joined: 29 Mar 2010
Posts: 3
Location: DFW, Texas
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| Posted: Sun Jun 13, 2010 2:27 pm Post subject: Hughes/JVC ILA340SC |
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Yes, thanks to Carey's help and a little datacomm review. . . I powered up two out of eight, so far, in between actual work. One was mostly dead, with very deteriorated optics, older controller, etc. I'll call that one parts donor #1. The second one was better, but, of course, not set up or calibrated at all. At least all three optical paths on that one largely worked. A couple of the others look to be in better condition. Here's hoping. . .
Fortunately, the parts stash is large. . . I'll be able to get back on the project next weekend, when I get back in town.
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Sun Jun 13, 2010 3:29 pm Post subject: |
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Please be sure to give us a photo tour of the inside of these beasts.
The first thing to consider once you've found your best running candidates is to give them a really good cleaning. I'd suspect that
they will need it.
It's really amazing how much picture quality deterioriates with even a relatively small amount of dust and dirt in the optics.
I've cleaned RPTVs, inside and out, including a coolant change, when the owner thought that it was so bad that the only thing to do was
to trash the set. So I said to him, I'll clean it up and if you like how it looks when I'm done, you pay me 75 bucks to cover the cleaning
and coolant change, and if you still think the thing sucks, give the set to me.
I always made 75 bucks a set. The owners are always thrilled with the results.
Cleanliness of the optical path is everything.
CJ
Last edited by cmjohnson on Wed Jun 16, 2010 3:26 pm; edited 1 time in total
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ekwoodard
Joined: 11 Jun 2010
Posts: 14
Location: Boise, ID
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| Posted: Wed Jun 16, 2010 3:20 pm Post subject: |
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I would be interested in buying one or two of these guys. I am not sure what freight would run, but maybe I can work deal with my neighbor who owns a transport company. What does each unit weigh?
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Wed Jun 16, 2010 3:27 pm Post subject: |
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Hey, if you're interested in playing around with that kind of projector, I know where there are a couple of AmPro light valve projectors, too, and I just happen to have the rarer-than-hen's-teeth remote to run them! If you're interested I'll give them a heads-up and then
turn them over to you for you to deal directly with them. They'll probably just give them to you if you cover shipping. If you make
that deal, I'll throw in the remote.
They're in Florida.
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ekwoodard
Joined: 11 Jun 2010
Posts: 14
Location: Boise, ID
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| Posted: Wed Jun 16, 2010 3:39 pm Post subject: |
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I am interested. I don't think these would work outside, I could find somewhere to set one up maybe turn my garage into a theatre.
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there is no point to the game.
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